© INVERTEBRATE ZOOLOGY, 2023In e eb a e Zoology, 2023, 20(1): 27–56
Sea anemones (Ac inia ia, Co allimo pha ia
and Zoan ha ia) om he Wes e n Be ing Sea
(No hwes Paci ic)
N.P. Sanamyan1, K.E. Sanamyan1, E.S. Bocha o a2, T.B. Mo ozo 3,
S.V. Galkin4
1 Kamcha ka B anch o Paci ic Geog aphical Ins i u e, Fa Eas e n B anch o he Russian Academy
o Sciences, Pa izanskaya 6, Pe opa lo sk-Kamcha sky, 683000, Russia. E-mail:
[email p o ec ed]
2 Kol zo Ins i u e o De elopmen al Biology o Russian Academy o Sciences, Va ilo a S . 26,
Moscow, 119334, Russia. E-mail: [email p o ec ed]
3 Kamcha ka B anch o he Russian Fede al Resea ch Ins i u e o Fishe ies and Oceanog aphy,
Nabe ezhnaya S . 18, Pe opa lo sk-Kamcha sky, 683000, Russia. E-mail: [email p o ec ed]
4 Shi sho Ins i u e o Oceanology o Russian Academy o Sciences, Nahimo skiy P . 36, Moscow,
117997, Russia. E-mail: [email p o ec ed]
N.P. Sanamyan ORCID 0000-0002-9987-0668
K.E. Sanamyan ORCID 0000-0002-7460-3985
E.S. Bocha o a ORCID 0000-0001-9978-3006
T.B. Mo ozo ORCID 0000-0001-6782-6921
S.V. Galkin ORCID 0000-0002-9748-5168
ABSTRACT: The pape p esen s a e iew o he auna o sea anemones collec ed and/o
documen ed pho og aphically in he wes e n pa o he Be ing Sea: in he a eas o he
Vulcanologo Massi , Ka aginsky and Olyu o sky Gul s and Ko yak slope. In o al, abou
80 species ha e been iden i ied and an anno a ed lis o sea anemones o he o de s
Ac inia ia, Co allimo pha ia, and Zoan ha ia is p o ided. This is he i s comp ehensi e
epo o he species di e si y o sea anemones li ing in he wes e n Be ing Sea, based on
he ecen collec ions and unde wa e imaging.
How o ci e his a icle: Sanamyan N.P., Sanamyan K.E., Bocha o a E.S., Mo ozo T.B.,
Galkin S.V. 2023. Sea anemones (Ac inia ia, Co allimo pha ia and Zoan ha ia) om he
Wes e n Be ing Sea (No hwes Paci ic) // In e . Zool. Vol.20. No.1. P.27–56, Suppl.
Tables 1–2. doi: 10.15298/in e zool.20.1.02
KEY WORDS: NW Paci ic, Be ing Sea, sea anemones, Ac inia ia, Co allimo pha ia,
Zoan ha ia, deep-sea auna, biodi e si y.
Фауна морских анемон (Ac inia ia, Co allimo pha ia
и Zoan ha ia) западной части Берингова моря
(Северо-Западная Пацифика)
Н.П. Санамян1, К.Э. Санамян1, Е.С. Бочарова2, Т.Б. Морозов3,
С.В. Галкин4
1 Камчатский филиал Тихоокеанского института географии ДВО РАН, ул. Партизанская,
6, Петропавловск-Камчатский 683000, Россия. E-mail: [email p o ec ed]
2 Институт биологии развития им. Н.К. Кольцова РАН, ул. Вавилова, 26, Москва, 119334,
Россия. E-mail: [email p o ec ed]
3 Камчатский филиал Всероссийского научно-исследовательского института рыбного хо-
зяйства и океанографии, ул. Набережная, 18, Петропавловск-Камчатский 683000, Россия.
28 N.P. Sanamyan e al.
E-mail: [email p o ec ed]
4 Институт океанологии им. П.П. Ширшова РАН, Нахимовский пр., 36, Москва, 117997,
Россия. E-mail: [email p o ec ed]
РЕЗЮМЕ: В статье представлен обзор фауны морских анемон, собранных и/или
задокументированных на фото- и видеоизображениях в западной части Берингова
моря: в районах массива Вулканологов, Карагинского и Олюторского заливов и
Корякского склона. Всего выявлено около 80 видов и приведен аннотированный
список морских анемон отрядов Ac inia ia, Co allimo pha ia и Zoan ha ia. Это первое
обобщение данных о видовом разнообразии морских анемон, обитающих в западной
части Берингова моря, основанное на недавних коллекционных сборах и подводных
фото- и видеосъемках.
Как цитировать эту статью: Sanamyan N.P., Sanamyan K.E., Bocha o a E.S., Mo ozo
T.B., Galkin S.V. 2023. Sea anemones (Ac inia ia, Co allimo pha ia and Zoan ha ia) om
he Wes e n Be ing Sea (No hwes Paci ic) // In e . Zool. Vol.20. No.1. P.27–56, Suppl.
Tables 1–2. doi: 10.15298/in e zool.20.1.02
КЛЮЧЕВЫЕ СЛОВА: Северо-Западная Пацифика, Берингово море, морские ане-
моны, актинии, кораллиморфарии, зоантарии, глубоководная фауна, биоразнооб-
разие.
mos pa o he Be ing Sea: Me idium a ci-
men, Halcampa egae Ca lg en, 1921, S omphia
coccinea (O.F. Mülle , 1776) and U icina c as-
sico nis (O.F. Mülle , 1776) (To ey, 1902,
1906; Ca lg en, 1921, 1940; Eash-Loucks, Fau-
in, 2012; La son, Daly, 2015; La son, 2016).
Only 11 species o Ac inia ia a e known om
he shallow wa e s o he Commande Islands in
he sou hwes e n pa o he Be ing Sea: Pa ai-
san hus ama ae Sanamyan e Sanamyan, 1998,
Me idium senile imb ia um Ve ill, 1865,
S omphia coccinea, An hopleu a o ien alis
A e ince , 1967, Aulac inia s ella (Ve ill,
1864), Aulac inia sp., Cnidopus japonicus (Ve -
ill, 1869), C ib inopsis albopunc a a Sanamy-
an e Sanamyan, 2006, C. olegi Sanamyan e
Sanamyan, 2006, U icina g ebelnyi Sanamyan
e Sanamyan, 2006 and U. imu i Sanamyan e
Sanamyan, 2020 (see Sanamyan, Sanamyan,
1998, 2006, 2015, 2020).
In he p esen wo k we summa ize a ail-
able and newly ob ained da a on di e si y and
dis ibu ion o sea anemones in he wes e n
Be ing Sea.
Ma e ial and me hods
The p esen wo k is based pa ly on he collec ed
specimens, pa ly on he pho og aphic images and
ideo eco ds aken du ing he ollowing expedi ions:
1) C uise 22 o RV Akademik Ms isla Keldysh
in 1990, collec ions we e made by Sigsbee awl,
In oduc ion
Un il ecen ime deep-wa e auna o sea
anemones o Be ing Sea was p ac ically un-
known wi h only one species, Liponema b e i-
co ne (McMu ich, 1893) eco ded a he dep hs
g ea e han 100 m: one specimen o his species
was epo ed om 1019 m in he Bowe s Bank,
one specimen om 580–680 m and 25 speci-
mens om 135 m in eas e n pa o Be ing Sea
(Dunn, Bakus, 1977; Eash-Loucks, Fau in,
2012). In 2001 we desc ibed Neohalcampa
sheikoi Sanamyan, 2001 om Ka aginsky Is-
land ( om 240–580 m) (Sanamyan, 2001), and
ecen ly ga e i s p elimina y da a on 11 spe-
cies eco ded on he Vulcanologo Massi (San-
amyan, Sanamyan, 2018; Galkin e al., 2019;
K ylo a e al., 2019; Mo duho ich e al., 2019;
Rybako a e al., 2020) and desc ibed ou new
species om he Vulcanologo Massi and
Ko yak slope (Sanamyan e al., 2021).
Mo e species we e known o he dep hs
shallowe han 100 m. Se en o hem we e
epo ed in eas e n pa o he Be ing Sea: Ed-
wa dsia sipunculoides (S impson, 1853), Pea-
chia pa asi ica (Agassiz, 1861), Halcampoides
pu pu eus (S ude , 1879), An hopleu a xan-
hog ammica (B and , 1835), Epiac is i e i
To ey, 1902, Me idium a cimen (B and ,
1835) and Ac icoac is b achyacon is La son,
2016. Fou species a e known o he no he n-
29Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
Fig. 1. Map showing wes e n pa o he Be ing Sea; s udy a ea is ma ked by yellow; numbe s 3, 4, 5 indica e
ansec s ( ed lines) in es iga ed by ROV Comanche 18 du ing c uise 82 o RV Akademik M.A. La en ye
on Ko yak slope in 2018.
Рис. 1. Карта районов исследований (отмечены желтым цветом) в западной части Берингова моря;
цифрами 3, 4, 5 обозначены номера трансект (красные линии), выполненнх на Корякском склоне
аппаратом “Команч 18” в 82-м рейсе НИС “Академик М.А. Лаврентьев” в 2018 г.
Du ing hese c uises he ollowing egions in he
wes e n pa o he Be ing Sea we e in es iga ed
(Fig. 1): Vulcanologo Massi in he sou h o Ko-
mando sky Basin (sou hwes e n pa o he Be ing
Sea) up o maximal dep hs 4277 m (Komando
G aben); Ko yak slope be ween he Cape Olyu o -
sky and he Cape Na a in, Ka aginsky and Olu o -
sky Gul s and con inen al slope be ween he Cape
Oze noy and he Cape Olyu o sky (wes e n pa o
he Be ing Sea). The geomo phology o he Vulca-
nologo Massi is gi en acco ding o Ba ano e al.,
2021. The lis o s a ions whe e sea anemones we e
eco ded is gi en in Supplemen Table 1.
Collec ed specimens we e ixed in 4% bu e ed
o malin o mo phological s udy and small pieces
cu om la ge specimens we e ixed in 96% e hanol
and kep in e ige a o o molecula analysis. Mo-
lecula da a we e used o sepa a e species o Ac inos-
d edging and manned subme sibles Mi -1 and Mi -
2, Shi sho Ins i u e o Oceanology o Russian Acad-
emy o Sciences;
2) C uise 75 o RV Akademik M.A. La en ye in
2016, ROV Comanche 18, A.V. Zhi munsky Na-
ional Scien i ic Cen e o Ma ine Biology, Fa Eas
B anch o Russian Academy o Sciences (NSCMB
FEB RAS);
3) C uise 82 o RV Akademik M.A. La en ye in
2018, ROV Comanche 18, NSCMB FEB RAS;
4) C uise 99 o RV P o esso Le anido in July–
Augus 2019, bo om awl, Kamcha ka B anch o
he Russian Fede al Resea ch Ins i u e o Fishe ies
and Oceanog aphy (Kamcha NIRO);
5) C uise 37 o RV P o esso Kagano sky in
2020, bo om awl, Kamcha NIRO;
6) FV (Fishing eeze awle ) Vale iy Maslak-
o in 2021, bo om awl, Kamcha NIRO.
30 N.P. Sanamyan e al.
olidae and Sicyonidae. To al DNA was ex ac ed
using Wiza d SV Genomic DNA Pu i ica ion Sys-
em (P omega) ollowing he manu ac u e ’s p o o-
col. The mi ochond ial (12S RNA, 16S RNA,
COIII) and nuclea (18S RNA and 28S RNA) gene
agmen s we e ampli ied using published p ime s
and p o ocols (Gelle , Wal on, 2001; Bocha o a,
2015; Sanamyan e al., 2018).
Pho o and ideo su eys we e ca ied ou in si u
du ing he 75 h c uise o he RV Akademik M.A.
La en ye (June–July 2016) on he no he n slope
o he Vulcanologo Massi and du ing he 82 h
c uise o he RV Akademik M.A. La en ye (June–
July 2018) on he sou he n slope o he Vulcanol-
ogo Massi and on he no he n and sou he n ops
o he Piip Volcano in he sou hwes e n pa o he
Be ing Sea and on he Ko yak slope in he wes e n
pa o he Be ing Sea. In addi ion, in hese c uises
and c uises o he RV P o esso Le anido (c uise
code 201999) in 2019, RV P o esso Kagano sky
(c uise 37) in 2020 and FFT Vale iy Maslako in
2021, eshly collec ed specimens we e pho og aphed
li e on boa d. All pho og aphs (excep Figs 3H, 5B)
we e aken using ROV Comanche 18 came as, NSC-
MB FEB RAS.
Sys ema ic Accoun
O de Ac inia ia
Family Relican hidae Rod íguez e Daly,
2014
Relican hus c . daphneae (Daly, 2006)
Fig. 2A.
Boloce oides daphneae Daly, 2006: 1241; Desb uy-
e es, Segonzac, B igh , 2006: 72.
Relican hus daphneae: Rod íguez e al., 2014: 7;
Xiao e al., 2019: 1.
MATERIAL. LV-82-5, 55.2700ºN 167.2991ºE –
55.2738ºN 167.2974ºE, dep h 3494–3435 m, one
specimen pho og aphed; LV-82-6, 55.6972ºN 167.
1262ºE, dep h 3948 m, one specimen pho og aphed.
REMARKS. Relican hus daphneae is a la ge
cha ac e is ically looking ose-colo ed sea anemone
wi h e y long en acles ape ing o hin h eads
(es ima ed o be up o 40 cm in leng h). One speci-
men was pho og aphed a ached on he s alk o a
glass sponge Hyalonema, co e ed wi h a colony o
zoan ha ian Epizoan hus a uus (on he sou he n
slope o he Vulcanologo Massi ), ano he ap-
pea ed si ing di ec ly on he bo om (in he small
high in Komando sky Basin). This e y in e es ing
species was epo ed o he i s ime in he Be ing
Sea and he cu en eco d is mos no he n and mos
deep-wa e one o his species (3435–3948 m).
P e ious eco ds we e om 13ºN o 23ºS on he Eas
Paci ic Rise, 32ºS Paci ic An a c ic Ridge on he
dep hs 2235–2650 m (Daly, 2006; Desb uye es e
al., 2006) and om 27.25ºS Sou h Eas Indian Ridge
in Indian Ocean on he dep h 3005 m (Ge des e al.,
2021). Taxonomic posi ion o his species is no
clea (see Rod íguez e al., 2014; Xiao e al., 2019).
Family Ac ine nidae S ephenson, 1922
Ac ine nus obus us (He wig, 1882)
Fig. 2B.
Po ponia obus a He wig, 1882: 113; Ca lg en, 1914:
54; 1949: 21.
Ac ine nus obus us: Uchida, 2007: 20 (and synony-
my).
MATERIAL. LV-75-22, 55.5100ºN 167.3240ºE
– 55.5040ºN 167.3196ºE, dep h 3561–3485 m, one
specimen collec ed (sample 8) and en specimens
pho og aphed.
LV-82-5, 55.2696ºN 167.2994ºE, dep h 3526
m, sample 5, one specimen collec ed; LV-82-6,
55.6946ºN 167.1238ºE – 55.6825ºN 167.1075ºE,
dep h 3906–3393 m, ou specimens collec ed (sam-
ple 3) and ou specimens pho og aphed.
REMARKS. Twen y specimens we e pho o-
g aphically documen ed in he abyssal zone o no h-
e n and sou he n slopes o he Vulcanologo Massi ,
six o hem we e collec ed. The eco ds o his
unusual la ge (up o 20 cm in he diame e o he
en acula c own) anemone a e e y a e, in he
Be ing Sea i is epo ed o he i s ime. This is
mos no he n and mos deep-wa e (3393–3906 m)
eco d o his species. P e iously Ac ine nus obus-
us was known om Paci ic coas s o Japan: o igi-
nally i was desc ibed om he ma e ial collec ed o
Japan by Challenge Expedi ion (3429 m, He wig,
1882; Ca lg en, 1949) and hen epo ed by Uchida
(2007) om he same egion om 1008–1200 m.
Family Edwa dsiidae And es, 1881
Edwa dsia spp.
Fig. 2C.
MATERIAL. LV-82-5, 55.2700ºN 167.2991ºE –
55.2738ºN 167.2974ºE, dep h 3494–3435 m, one
specimen pho og aphed; LV-82-8, 55.3806ºN 167.
2617ºE, dep h 485 m, one specimen pho og aphed.
REMARKS. Two small species, pho og aphi-
cally documen ed on he sou he n slope o he Vul-
canologo Massi and Piip Volcano, bu no collec -
ed, mos p obably belong o he genus Edwa dsia.
They ha e a ypical o his genus oc ome ous a -
angemen o he en acles and hei column is bu ied
in he sedimen . The i s species is whi e, wi h 16
31Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
Fig. 2. A — Relican hus c . daphneae; B — Ac ine nus obus us; C — Edwa dsia sp.; D–E — Edwa dsiidae
spp. om he Vulcanologo Massi ; F — Edwa dsiidae sp. om he Ko yak slope; G — Dac ylan hus sp.;
H — C ib inopsis sp.1; I — c . U icina sp.; J — Liponema b e ico ne; K — Sicyonis deniso i; L — S.
kuzne so i.
Рис. 2. A — Relican hus c . daphneae; B — Ac ine nus obus us; C — Edwa dsia sp.; D–E — Edwa dsiidae
spp. на массиве Вулканологов; F — Edwa dsiidae sp. на Корякском склоне; G — Dac ylan hus sp.;
H — C ib inopsis sp.1; I — c . U icina sp.; J — Liponema b e ico ne; K — Sicyonis deniso i; L — S.
kuzne so i.
32 N.P. Sanamyan e al.
en acles a anged in wo ci cles (8+8), eco ded in
abyssal zone a 3435–3494 m (Fig. 2C). Ano he
species wi h anspa en en acles and eigh whi e
spo s on he o al disc a he bases o he en acles was
pho og aphed in he ba hyal zone a 485 m on cold
seeps ield be ween bac e ial ma s.
Edwa dsiella sp.
MATERIAL. LV-75-21, 55.4818ºN 167.2573ºE,
2841 m, one specimen pho og aphed.
REMARKS. Small inconspicuous sea anemone
wi h wo m-like column hidden in subs a e pho o-
g aphically documen ed on he no he n slope o he
Vulcanologo Massi a 2841 m is iden i ied as a
membe o he genus Edwa dsiella (sub amily Ed-
wa dsiellinae, see Sanamyan, Sanamyan, 2021 o
his sub amily name). I s a he long ape ing scapu-
lus and uppe pa o he scapus, co e ed by pe id-
e m, p ojec om subs a e and a e well isible.
Membe s o his genus li e in c e ices in ock, be-
ween he s ones and o he ha d subs a es, a e di i-
cul o collec and he e o e he eco ds a e ew. In he
No h Paci ic Edwa dsiella was eco ded only once:
a shallow wa e species o his genus was ecen ly
eco ded in B i ish Columbia (Sanamyan e al., 2018).
Edwa dsiidae spp.
Fig. 2D–F.
MATERIAL. AMK-22-2321, 55.3716°N 167.
3133°E – 55.3633°N 167.3°E, dep h 1490–1554 m,
d edge, 25 specimens collec ed.
LV-75-17, 55.4527ºN 167.2653ºE, dep h 2044
m, one specimen pho og aphed; 55.4454ºN 167.
2627ºE, dep h 1851 m, one specimen pho og aphed.
LV-75-21, 55.4839ºN 167.2582ºE, dep h 2878 m,
one specimen pho og aphed; 55.4770ºN 167.2518ºE
– 55.4733ºN 167.2527ºE, dep h 2704–2636 m, eigh
specimens pho og aphed.
LV-82-9, 55.3466ºN 167.2752ºE – 55.3550ºN
167.2726ºE, dep h 1933–1611 m, ou specimens
pho og aphed. LV-82-12, 60.8671ºN 174.3183ºE –
60.8723ºN 174.3104ºE, dep h 506–489 m, wo spec-
imens pho og aphed; LV-82-13, 60.8298ºN 174.
3769ºE – 60.8388ºN 174.3689ºE, dep h 677–611 m,
se en specimens pho og aphed; LV-82-14, 61.
0958ºN 175.0119ºE – 61.1202ºN 174.9662ºE, dep h
884–660 m, 23 specimens pho og aphed; LV-82-
15, 61.1430ºN 174.9285ºE – 61.1779ºN 174.8708ºE,
dep h 517–417 m, 68 specimens pho og aphed; LV-
82-16, 61.1787ºN 174.8704ºE – 61.1899ºN 174.
8345ºE, dep h 415–356 m, abou 1160 specimens
pho og aphed; LV-82-17, 61.1806ºN 174. 8508ºE –
61.1801ºN 174.8493ºE, dep h 402–400 m, 25 spec-
imens pho og aphed; LV-82-18, 61.1198ºN 174.
9638ºE – 61.1197ºN 174.9652ºE, dep h 652–663 m,
eigh specimens pho og aphed; LV-82-19, 61.
1539ºN 175.4492ºE – 61.1538ºN 175.4493ºE, dep h
693 m, 16 specimens pho og aphed; LV-82-20, 61.
1713ºN 174.8810ºE – 61.1727ºN 174.8781ºE, dep h
430–427 m, 23 specimens pho og aphed; LV-82-
21, 60.8305ºN 174.3770ºE – 60.8343ºN 174. 3720ºE,
dep h 672–660 m, i e specimens pho og aphed.
REMARKS. A leas i e o he species o Ed-
wa dsiidae may be ecognized in he pho o and ideo
iles aken by ROV Comanche 18.
Fou o hem we e pho og aphed bu no collec -
ed on he Vulcanologo Massi . All ou species a e
p esen on he no he n slope o he Vulcanologo
Massi and one o hem is eco ded also on he
sou he n slope o he Piip Volcano. The la e spe-
cies, pho og aphed a 1611–1933 m, li es in mud,
has pale- ose colo a ion, small o al disc and a he
long no nume ous (abou 10) en acles. Remaining
h ee species we e eco ded deepe han 2000 m: wo
o hem li e in mud, bo h a e whi e, one has up o 16
sho en acles, ano he abou 30 long en acles (Fig.
2D), and one species inhabi s shallow c e ices on
he s ones (Fig. 2E). The la e species has cylind i-
cal column, scapus co e ed by pe ide m, sho whi e
scapulus and abou 26 hin whi e en acles.
Ano he species o Edwa dsiidae was eco ded
on he Ko yak slope a 356–884 m (Fig. 2F). The
specimens a e nume ous (mo e han 1330 specimens
seen on he pho og aphs bu no collec ed), li e on
muddy bo om. This species has abou 16 hin long
en acles, en acula c own up o 4 cm in diame e .
O al disc has eigh da k spo s a anged in a ci cle.
The body is up o 5 mm in diame e , scapulus
anspa en wi h whi e s okes in uppe pa and
da k- ed im. This species eco ded in he back-
g ound communi y a ound cold seep ields which
included he sea pen Halip e is c . willemoesi (Köl-
like , 1880) wi h he commensal ophiu oid As e o-
nyx and he echinoid B isas e la i ons (Agassiz,
1898), and also in p oximi y o bac e ial ma s a cold
seeps (K ylo a e al., 2018), bu no eco ded di ec -
ly on he seeps and bac e ial ma s. Howe e , mos
dense popula ions o hese Edwa dsiidae, up o 100
specimens pe m2, was eco ded du ing he di e 16
(s a ion LV-82-16) a 356–415 m in he se lemen o
domina ed he e sea anemone Saga ioge on cali o -
nicus, whe e cold seeps ha e no been ound.
Family P eac iniidae England in England
e Robson, 1984
Dac ylan hus sp.
Fig. 2G.
MATERIAL. LV-82-10, 55.2882ºN 167.3011ºE
– 55.2898ºN 167.2974ºE, dep h 2778–2638 m, one
specimen pho og aphed.
33Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
REMARKS. This is p obably he mos in e es -
ing eco d o sea anemone made on he Vulcanol-
ogo Massi du ing ecen c uises in he Be ing Sea.
One la ge specimen was eco ded a ached o a
e ical ock wall on he sou he n slope o he Piip
Volcano a he dep h o abou 2700 m. Un o una e-
ly, he ROV ailed o collec his specimen, bu i was
possible o ook e y de ailed pho og aphs. The
specimen has long (abou 30 cm) cylind ical column
co e ed by small spa se en acle-like papillae and 24
sho en acles a anged in h ee cycles (6+6+12) a
he ma gin o he o al disc. The body wall is hin and
anspa en , all in e nal s uc u es a e clea ly isible
h ough i . The shape and s uc u e a e so unusual
and so closely esemble Dac ylan hus an a c icus
(Clubb, 1908), ha we ha e no doub ha his
species belongs o is closely ela ed o he genus
Dac ylan hus (see Sanamyan e al., 2015b o pho-
og aphs o li e specimens o D. an a c icus om
An a c ic). P e iously his mono ypic genus was
known only in he An a c ic a he dep h 20–610 m
(Dunn, 1983; Sanamyan e al., 2015b). Fo a long
ime, his genus, oge he wi h ela ed P eac is (mo-
no ypic) and P ychodac is ( wo species), was ea ed
as a membe o a sepa a e o de P ychodac ia ia
Ca lg en, 1940, bu hen assigned o he o de Ac in-
ia ia basing on molecula da a. The specimen om
he Be ing Sea canno be conspeci ic wi h An a c ic
D. an a c icus due o geog aphical and dep h sepa-
a ion and is mos p obably ep esen s he second,
undesc ibed species o his genus.
Family P ychodac inidae Appellö , 1893
P ychodac is pa ula Appellö , 1893
P ychodac is pa ula Appellö , 1893: 4; Ca lg en, 1911:
12; 1921: 11; 1934: 348; 1940: 19; 1049: 11; S ephenson,
1922: 249; Cappola, Fau in, 2000: 995; G ebelny, 2007: 59.
MATERIAL. PL-99-6, 58.443ºN 162.823ºE –
58.468ºN 162.838ºE, dep h 58–55 m, one specimen
collec ed.
REMARKS. This a c ic-bo eal species is known
om he dep hs 47–350 m (Ca lg en, 1949; G ebel-
ny, 2007). In he Be ing Sea i was epo ed only in
mos no he n pa , in he Be ing S ai (G ebelny,
2007). Fo wes e n pa o he Be ing Sea i is
epo ed o he i s ime.
Family Ac iniidae Ra inesque, 1815
C ib inopsis sp. 1
Fig. 2H.
MATERIAL. LV-82-7, 55.3689ºN 167.2659ºE–
55.3732ºN 167.2656ºE, dep h 984–815 m, one spec-
imen collec ed (sample 1) and ou specimens pho-
og aphed; LV-82-8, 55.3765ºN 167.2639ºE, dep h
670 m, one specimen pho og aphed. LV-82-11, 60.
8544ºN 174.3484ºE, dep h 553 m, one specimen
pho og aphed; LV-82-13, 60.8322ºN 174.3754ºE –
60.8336ºN 174.3734ºE, dep h 677–609 m, wo spec-
imens pho og aphed; LV-82-15, 61.1399ºN 174.
9333ºE – 61.1523ºN 174.9126ºE, dep h 535–489 m,
one specimen collec ed (sample 6) and i e speci-
mens pho og aphed; LV-82-18, 61.1193ºN 174.
9692ºE – 61.1195ºN 174.9650ºE, dep h 677–658 m,
one specimen collec ed (sample 3) and h ee speci-
mens pho og aphed; LV-82-21, 60.8305ºN 174.
3770ºE – 60.8343ºN 174.3720ºE, dep h 672–660 m,
one specimen pho og aphed.
REMARKS. 20 specimens a e pho og aphically
documen ed (six o hem on he Piip Volcano and 14
on he Ko yak slope) a dep hs o 489–984 m, h ee
o which we e collec ed. All specimens we e soli-
a y, a a la ge dis ance om each o he , no in
g oups. Mos specimens a e decame ous, wi h up o
80 en acles a anged in ou cycles (10+10+
20+40=80). Only one specimen was oc ome ous
wi h he en acles dis ibu ed as 8+8+16(?)+
32(?)=64(?) (only 58 o which a e isible in he
pho o; possibly his is young specimen which ye no
acqui ed decame ous a angemen , see Sanamyan e
al., 2019 o discussion o he de ails o acqui ing a
decame ous a angemen ). All specimens ha e a
plain b igh - ose colo . The uppe pa o he column
p ojec s abo e he su ace o he so bo om, he
ma gin wi h he sphe ules ben in he ho izon al
di ec ion, he numbe o ma ginal sphe ules (one in
each endo- and exocoel) co esponds o he numbe
o en acles. The ac inopha ynx is b igh ose- ed.
Thin ed lines ma k inse ions o he mesen e ies on
he o al disc, some imes hin whi e adial lines a e
isible nea he bases o he en acles. The en acles
a e long (inne ones as long as he diame e o he
o al disc), sha ply poin ed, wi h moi é. The diame e
o he expanded en acula c own is up o 20 cm, he
diame e o he column is up o 10 cm. Many ed
sh imps a e p esen a ound. The species was ound
on he sou he n slope o he Piip Volcano a dep hs
o 670–984 m, and on he Ko yak slope a dep hs o
489–677 m. The species was also p esen nea bac-
e ial spo s and nea he cold seeps wi h he sym-
bio ophic bi al e Calyp ogena paci ica Dall, 1891
(see K ylo a e al., 2018).
C ib inopsis spp.
MATERIAL. PL-99-83, 60.480°N 171.747°E –
60.485°N 171.758°E, dep h 102 m, sample 16, one
specimen collec ed; PL-99-92, 60.700°N 172.473°E
– 60.693°N 172.447°E, dep h 99–98 m, sample 19,
one specimen collec ed.
PK-37-5, 59.193°N 166.372°E – 59.186°N 166.
347°E, dep h 540 m, sample 3, one specimen collec -
34 N.P. Sanamyan e al.
ed; PK-37-6, 59.202°N 166.354°E – 59.191°N 166.
334°E, dep h 443–445 m, sample 2, one specimen
collec ed; PK-37-52, 61.347°N 175.551°E – 61.
338°N 175.528°E, dep h 245–250 m, sample 20, one
specimen collec ed.
VM-119, 60.8533ºN 172.9166ºE – 60.8433ºN
172.8766ºE, dep h 132–130 m, sample 6, one spec-
imen collec ed.
REMARKS. The specimens o C ib inopsis
wi hou ma ginal sphe ules a e p obably ep esen ed
by a leas wo species. They we e eco ded a dep hs
o 98–540 m on he shel and con inen al slope o he
wes e n pa o he Be ing Sea.
U icina imu i Sanamyan e Sanamyan, 2020
U icina imu i Sanamyan, Sanamyan, 2020: 74.
U icina c assico nis: Sanamyan, Sanamyan, 2006:
379; 2009: 169; 2010: 220.
U icina elina c assico nis: Ca lg en, 1921: 172, o
Be ing Island only.
No Ac inia c assico nis O.F. Mülle , 1776: 231.
MATERIAL. PL-99-15, 59.223°N 163.530°E –
59.240°N 163.530°E, dep h 27 m, sample 2, one
specimen collec ed.
REMARKS. This species has absolu ely smoo h
column. Ca lg en (1921: 172) epo ed i (as U ic-
ina elina c assico nis) om he Be ing Sea nea he
Be ing Island om he dep hs 118–136 m and his is
mos deep-wa e eco d o his species. Thus in
icini y o Be ing Island his species occu s om
in e idal zone o a leas 136 m. The species was
eco ded o he i s ime o Ka aginsky Gul .
U icina sp.
MATERIAL. PL-99-83, 60.480°N 171.747°E –
60.485°N 171.758°E, dep h 102 m, sample 17, one
specimen collec ed.
REMARKS. The species has smoo h body; i
di e s om U icina imu i in he size o i s nema-
ocys s.
c . U icina sp.
Fig. 2 I.
MATERIAL. LV-82-11, 60.8282ºN 174.
2954ºE – 60.8411ºN 174.3782ºE, dep h 682–617 m,
wo specimens pho og aphed; LV-82-15, 61.1519ºN
174.9132ºE – 61.1725ºN 174.8792ºE, dep h 491–
429 m, ou specimens pho og aphed; LV-82-18,
61.1190ºN 174.9691ºE, dep h 682 m, one specimen
pho og aphed.
REMARKS. Se en specimens a e pho og aphi-
cally documen ed on he Ko yak slope a dep hs o
429–682 m, none collec ed. They seem o be ela ed
o C ib inopsis sp.1, oge he wi h which hey may
occu , and ha e he same decame ous a angemen
o he en acles in ou cycles (10+10+20+40=80).
Howe e , hey a e pale , he o al disc is pinkish-
o ange; en acles a e pale, anspa en , hick, wi h
blun ips, hei leng h is equal o he adius o he
o al disc, wi hou moi é, ips a e beige-yellowish;
he ac inopha ynx is pale. The diame e o he ex-
panded en acula c own is up o 10–13 cm. They a e
deepe bu ied in mud, up o he le el o ma gin. I
was no possible o de e mine whe he hey ha e
ma ginal sphe ules. I is possible ha hey belong o
ano he species o C ib inopsis o may belong o a
ela ed genus U icina. This species, unlike C ib in-
opsis sp.1, mo e o en occu s in communi y which
includes he co al Halip e is c . willemoesi wi h he
commensal ophiu oid As e onyx and he echinoid
B isas e la i ons.
Boloce a sp.
MATERIAL. AMK-22-2316, 55.6013°N 167.
384°E – 55.5833°N 167.4076°E, Sigsbee awl, dep h
4294–4200 m, wo specimens collec ed.
REMARKS. Only h ee specimens o his genus
we e known om No hwes Paci ic. They we e
epo ed by Wassilie (1908) om he Sea o Japan
om 510–800 m and wi h some hesi a ion assigned
o Boloce a uediae (see Ca lg en, 1949). Two o he
species a e known om No heas Paci ic: B. pan-
nosa McMu ich, 1893 epo ed o Cali o nia om
757 m, and B. kensmi hi Eash-Loucks e Fau in,
2012, desc ibed om 1804–4100 m om No heas
Paci ic Ocean, bo h known om o iginal desc ip-
ions only. Ou specimens appea o be dis inc om
known species o Boloce a.
Family Liponema idae He wig, 1882
Liponema b e ico ne (McMu ich, 1893)
Fig. 2 J.
Boloce a b e ico nis McMu ich, 1893: 158; 1898:
231; 1904: 257; Ve ill, 1922:117.
Boloce a mul ico nis: Ca lg en, 1921: 144 (only spec-
imens om Be ing Island).
Liponema mul ico nis: Ca lg en, 1932: 260; 1933: 11
(only specimens om Be ing Island).
Liponema b e ico nis: Ca lg en, 1949: 55; Dunn,
Bakus, 1977: 78.
Liponema b e ico ne: Eash-Loucks, Fau in, 2012: 40.
MATERIAL. LV-75-2, 55.4172ºN 167.2768ºE –
55.4174ºN 167.2767ºE, dep h 373–375 m, one spec-
imen pho og aphed; LV-75-21, 55.4875ºN 167.
2600ºE – 55.4839ºN 167.2582ºE, dep h 2810–
2757 m, one specimen pho og aphed.
LV-82-9, 55.3520°N 167.2740ºE – 55.3540°N
167.2730ºE, dep h 1755–1698 m, wo specimens
pho og aphed; LV-82-11, 60.8224ºN 174.4023ºE –
35Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
60.8544ºN 174.3484ºE, dep h 715–553 m, ou spec-
imens pho og aphed; LV-82-12, 60.8550ºN 174.
3487ºE – 60.8901ºN 174.2908ºE, dep h 551–431 m,
ele en specimens pho og aphed; LV-82-14, 61.
0991ºN 175.0057ºE – 61.1201ºN 174.9661ºE, dep h
847–663 m, wo specimens pho og aphed; LV-82-
15, 61.1369ºN 174.9397ºE – 61.1733ºN 174.8775ºE,
dep h 547–427 m, ou specimens pho og aphed;
LV-82-19, 61.1538ºN 175.4497ºE – 61.1579ºN 175.
4070ºE, dep h 694–685 m, h ee specimens collec -
ed (sample 6) and eigh specimens pho og aphed;
LV-82-21, 60.8341ºN 174.3724ºE – 60.8332ºN 174.
3740ºE, dep h 660 m, one specimen pho og aphed.
REMARKS. 37 specimens o his species we e
pho og aphically documen ed du ing wo expedi-
ions a he dep hs 373–2810 m, h ee o hem we e
collec ed.
This is a la ge species which usually lies una -
ached on so bo om bu some imes occu s on s ony
bo om. The li ing specimens a e up o 15 cm in
diame e , dome-shaped, column hidden below he
o al disc co e ed by en acles. Fo mo emen , i can
ake a cylind ical shape and oll on he sea bo om
(Dunn, Bakus, 1977, ig. 8). The colo a ies om
whi e o pale- ose o b igh - ose o pu ple. In he
p ocess o collec ing and ixa ion, he en acles all
o due o he con ac ion o he sphinc e muscle
loca ed a he base o each en acle, and mos p e-
se ed specimens a e de oid o he en acles (pa ial-
ly o comple ely).
The p esen species s ongly esembles Lipone-
ma mul ico ne (Ve ill, 1880), known om No h
A lan ic, bu cu en ly Paci ic L. b e ico ne and
A lan ic L. mul ico ne a e ea ed as alid. Thus, he
specimens om he Be ing Island (135 m), iden i ied
by Ca lg en (1921) as Boloce a mul ico nis Ve ill,
1880, a e ea ed he e as L. b e ico ne. Thi d spe-
cies, Liponema mul ipo um He wig, 1882, is known
om Sou h Paci ic.
In he wes e n pa o he Be ing Sea his species
was no p e iously epo ed, al hough i is known o
he Ame ican and Asian coas s o he No h Paci ic
om dep hs o 102–4134 m (Eash-Loucks, Fau in,
2012).
Family Sicyonidae He wig, 1882
Sicyonis deniso i N. Sanamyan, K. Sanamy-
an, Galkin, I in e Bocha o a, 2021
Fig. 2K.
Sicyonis deniso i Sanamyan e al., 2021: 391.
MATERIAL. LV-75-1, 55.4246ºN 167.2903ºE,
dep h 1061 m, sample 1, one specimen collec ed;
LV-75-9, 55.4286ºN 167.2775ºE – 55.4225ºN 167.
2760ºE, dep h 1000–720 m, one specimen collec ed
(sample 2) and h ee specimens pho og aphed; LV-
75-17, 55.4661ºN 167.2761ºE – 55.4447ºN 167.
2626ºE, dep h 2488–1835 m, six specimens pho o-
g aphed; LV-75-18, 55.4292ºN 167.2697ºE – 55.
4290ºN 167.2706ºE, dep h 1040–1030 m, h ee spec-
imens pho og aphed; LV-75-21, 55.4818ºN 167.
2573ºE – 55.4633ºN 167.2547ºE, dep h 2841–
2294 m, ou specimens pho og aphed.
LV-82-1, 55.4171ºN, 167.2773ºE, 386 m, sam-
ple 1, one specimen collec ed; LV-82-7, 55.3689ºN
167.2659ºE – 55.3740ºN 167.2653ºE, dep h 1010–
785 m, wo specimens collec ed (sample 1) and
wel e specimens pho og aphed; LV-82-8, 55.
3750ºN 167.2643ºE – 55.3795ºN 167.2620ºE, dep h
755–539 m, ou specimens pho og aphed.
REMARKS. 37 specimens o his species we e
pho og aphically documen ed du ing wo expedi-
ions in 2016 and 2018 a he dep hs 386–2841 m on
he op o he Piip Volcano and i s sou he n slope,
i e o hem we e collec ed. This la ge (up o 20–
25 cm in diame e o he en acula c own) sea anem-
one li es on he s ones. The colo is usually plain,
om o ange o yellow-b own o eddish-b own, he
o al disc may be b igh e o da ke han he column.
The en acles a e nume ous, up o 200 o mo e,
a anged up o i e cycles. This species does no
o m la ge se lemen s, and specimens o en occu
soli a ily on la ge dis ance one om ano he , bu on
hese dep hs S. deniso i appea s o be he mos
common species o la ge sea anemones in he sou h-
wes e n pa o he Be ing Sea. I was eco ded on he
s ones su ounded by bac e ial ma s in he icini y o
cold seeps and also in communi ies o glass sponge
Fa ea spp. a he dep hs 1750–720 m (see Rybak-
o a e al., 2020). In he o iginal desc ip ion (San-
amyan e al., 2021) dep h ange is gi en only o
collec ed specimens (386–1061 m). He e we epo
deepe eco ds o his species (1835–2841 m) on he
basis o unde wa e pho og aphs on which his spe-
cies may be ecognized.
Sicyonis kuzne so i N. Sanamyan,
K. Sanamyan, Galkin, I in e Bocha o a, 2021
Fig. 2 L.
Sicyonis kuzne so i Sanamyan e al., 2021: 400.
MATERIAL. LV-75-17, 55.4553ºN 167.
2668ºE – 55.4498ºN 167.2651ºE, dep h 2131–
1976 m, one specimen collec ed (sample 4) and one
specimen pho og aphed.
REMARKS. This la ge (abou 18–20 cm in di-
ame e o expanded en acula c own) sea anemone
esembles Sicyonis deniso i bu may be dis inguished
by plain ligh ose-beige colo and by p esence o
only abou 80 en acles a anged in h ee o ou
cycles in specimens o simila size (in S. deniso i
hey a e wo imes mo e nume ous). Only wo spec-
imens we e pho og aphically documen ed (one o
which was collec ed) on he no he n slope o he
42 N.P. Sanamyan e al.
Fig. 4. A — Halcampidae sp. om he no he n slope o he Piip Volcano; B — Halcampidae sp. om he
Komando G aben; C — c . Halcampoides sp.; D — Amphian hus sp. om he no he n slope o he Piip
Volcano; E — Amphian hus sp. om he sou he n slope o he Piip Volcano; F — Pa acalliac is c .
in ol ens; G — Ho ma hia sp.; H — Phelliac is sp. om he no he n slope o he Piip Volcano; I —
Phelliac is sp. om he sou he n slope o he Piip Volcano; J — a . Ho ma hiidae sp. 1; K — a .
Ho ma hiidae sp. 2; L — Saga ioge on cali o nicus.
Рис. 4. A — Halcampidae sp. на северном склоне вулкана Пийпа; B — Halcampidae sp. в грабене
Командор; C — c . Halcampoides sp.; D — Amphian hus sp. на северном склоне вулкана Пийпа; E —
Amphian hus sp. на южном склоне вулкана Пийпа; F — Pa acalliac is c . in ol ens; G — Ho ma hia sp.;
H — Phelliac is sp. на северном склоне вулкана Пийпа; I — Phelliac is sp. на южном склоне вулкана
Пийпа; J — a . Ho ma hiidae sp. 1; K — a . Ho ma hiidae sp. 2; L — Saga ioge on cali o nicus.
43Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
Family Amphian hidae He wig, 1882
Amphian hus spp.
Fig. 4D, E.
MATERIAL. AMK-22-2308, 55.412°N 167.
2345ºE, dep h 1200 m, subma ine Mi -2, di e 5/46,
six specimens collec ed.
LV-75-17, 55.4666°N 167.2754ºE, dep h
2486 m, sample 1, se e al specimens collec ed; LV-
75-21, 55.4733°N 167.2527ºE – 55.4633°N 167.
2547ºE, dep h 2645–2509 m, se e al ens speci-
mens pho og aphed.
LV-82-7, 55.3729°N 167.2655ºE, dep h 830 m,
se e al specimens pho og aphed.
REMARKS. Small sea anemones a ached o he
b anches o go gonian co als. The genus Amphian-
hus con ains 24 species, mos o which come om
deep wa e . Howe e , only ou species o his genus
a e known in Paci ic Ocean, and all a e based on ew
eco ds. The specimens pho og aphed by ROV in
2016 on he no he n slope o he Vulcanologo
Massi (some o which we e collec ed) a 2486–
2645 m ha e almos whi e o pale- ose colo a ion o
he same colo as he go gona ians o which hey a e
a ached (Fig. 4D). The specimens pho og aphed in
2018 on he sou he n slope o he Piip Volcano a a
shallowe dep h o 830 m a e o sa u a e ose colo
and p obably belong o ano he species (Fig. 4E).
Family Ho ma hiidae Ca lg en, 1932 (1889)
Ac inauge c . e illii McMu ich, 1893
Ac inauge e illii McMu ich, 1893: 184; Eash-
Loucks, Fau in, 2012: 34.
MATERIAL. PK-37-55, 61.404°N 176.353ºE –
61.397°N 176.328ºE, dep h 440–430 m, sample 23,
one specimen collec ed.
REMARKS. One specimen was collec ed on he
Ko yak slope a 430–440 m. Species o Ac inauge
ha e cylind ical column co e ed by ube cles and
esemble he species o he genus Ho ma hia, bu
membe s o Ac inauge occu mo e o en on so
bo om, while Ho ma hia p e e s ha d subs a um.
Abo al hickenings on he en acles a e p esen in
Ac inauge bu no in Ho ma hia. Ac inauge e illii
was o iginally desc ibed om he eas e n Paci ic:
Galapagos Islands, he coas s o Chile and Cali o nia
(McMu ich 1893); la e i was eco ded om he
Sou hwes Paci ic (Dunn 1983) and he No heas
Paci ic o he Gul o Alaska a dep hs 119–4250 m
(Eash-Loucks, Fau in, 2012). Ou eco d ex ends
known ange o dis ibu ion o his species o No h-
wes Paci ic and Be ing Sea and is mos no he n
eco d o his species. Howe e , e y wide geo-
g aphic and ba hyme ic dis ibu ion some imes may
sugges ha no all eco ds we e iden i ied co ec ly
and mo e han one species a e in ol ed.
Pa acalliac is c . in ol ens
(McMu ich, 1893)
Fig. 4F.
Adamsia in ol ens McMu ich, 1893: 182.
Pa acalliac is in ol ens: Ca lg en, 1947: 15; 1949:
95.
MATERIAL. LV-82-10, 55.2902°N 167.
3009ºE – 55.2898°N 167.2974ºE, dep h 2755–
2638 m, one specimen collec ed (sample 3) and
se en specimens pho og aphed.
REMARKS. This species is an obliga e sym-
bion ha li es on he shell o gas opods inhabi ed
by he mi c abs. I can each 10 cm in leng h in
ex ended s a e. I s pedal disc co e s he whole shell
and capable o o m ca cinoecium. The column and
he ma gin a e smoo h, he scapus is co e ed wi h a
hin cu icle, some imes wi h a laye o mud. The
scapulus, he limbus and he en acles a e ose-
o ange. Unde wa e pho os and ideos on he sou h-
e n slope o he Vulcanologo Massi eco ded 10
specimens, one o which was collec ed.
Daly e al. (2004) synonymized Paci ic P. in ol-
ens and No h A lan ic P. conso s (Ve ill, 1882).
Howe e , P. conso s has co onal ube cles co e ed
by cu icle (Molod so a e al., 2008), simila o hose
epo ed o syn ypes o P. conso s, which a e p ob-
ably cha ac e is ic o he A lan ic species. The known
specimens om he Paci ic Ocean ha e no such
ube cles. Thus, a p esen , we p e e o sepa a e he
A lan ic and Paci ic species and conside hem as
wo species.
Ho ma hia sp.
Fig. 4G.
MATERIAL. LV-75-2, 55.4172ºN 167.2768ºE
– 55.4174ºN 167.2767ºE, dep h 413–372 m, many
specimens pho og aphed; LV-75-3, 55.4163ºN 167.
2769ºE – 55.4168ºN 167.2760ºE, dep h 355–389 m,
many specimens pho og aphed; LV-75-4, 55.4164ºN
167.2764ºE – 55.4167ºN 167.2759ºE, dep h 408–
398 m, se e al specimens pho og aphed; LV-75-5,
55.4166ºN 167.2757ºE, dep h 392 m, a ew speci-
mens pho og aphed; LV-75-7, 55.4164ºN 167.
2749ºE – 55.4166ºN 167.2757ºE, dep h 402–377 m,
se e al specimens pho og aphed; LV-75-8, 55.
4159ºN 167.2734ºE – 55.4188ºN 167.2733ºE, dep h
401–375 m, se e al specimens pho og aphed; LV-
75-9, 55.4168ºN 167.2747ºE, dep h 352 m, a ew
specimens pho og aphed; LV-75-18, 55.4343°N
167.2673ºE – 55.4337°N 167.2676ºE, dep h 1389–
1342 m, wo specimens pho og aphed.
44 N.P. Sanamyan e al.
LV-82-1, 55.4166°N 167.2756ºE – 55.4159°N
167.2737ºE, dep h 390–362 m, one specimen col-
lec ed (sample 7) and six specimens pho og aphed.
REMARKS. Sea anemone wi h cylind ical col-
umn co e ed wi h b ownish cu icle and ows o
ube cles. The ube cles a e la ge dis ally. Sho
ba e ose colo ed scapulus has ube cles. The o al
disc and en acles a e o ange. The o al disc is wide
han he column, up o 10 cm in diame e . The
en acles wi hou mesogloeal hickenings, a anged
in i e cycles on he pe iphe y o he o al disc, up o
96 in numbe . The species was eco ded on he
no he n op o he Piip Volcano a dep hs o 352–
415 m, whe e i is common: many specimens we e
pho og aphed, one collec ed. Two specimens, p ob-
ably belonging o his species, we e pho og aphed
on he no he n slope o he Piip Volcano a he
ba hyal dep h o 1342–1389 m (no collec ed).
Phelliac is spp.
Fig. 4H, I.
MATERIAL. LV-75-22, 55.5134ºN 167.3270ºE,
dep h 3599 m, one specimen pho og aphed.
LV-82-6, 55.6826°N 167.1075ºE – 55.6825°N
167.1075ºE, dep h 3397–3393 m, sample 3, one
specimen collec ed; LV-82-10, 55.3188°N 167.
2907ºE, dep h 2605 m, one specimen pho og aphed.
REMARKS. Two species o Phelliac is ha e
been eco ded om he Vulcanologo Massi and
Komando sky Basin in he sou hwes o he Be ing
Sea. The specimens a e la ge wi h a beige-b ownish
cylind ical column wi h longi udinal ows o ube -
cles (mesogloeal hickenings) and e y wide o al
disc (abou 20 cm in diame e ). The en acles a e on
he ma gin o he o al disc, mo e han 100 in numbe .
Two specimens pho og aphed on he no he n slope
o he Vulcanologo Massi in 2016 (3599 m, no
collec ed) and on he small high o he wes o he
Komando G aben in 2018 (3397–3393 m, collec -
ed), mos p obably belong o one species. They ha e
a simila ly looking high column, la ge ci cula o al
disc and long hin en acles wi h weak hickenings a
he base on he abo al side; he eco ded dep h is also
simila (Fig. 4H). The specimen, pho og aphed on
he sou he n slope o he Vulcanologo Massi
(2605 m), di e s in e y s ong abo al hickenings
on he en acles, ed undula ing o al disc and lowe
and wide column (Fig. 4 I).
a . Ho ma hiidae sp.1
Fig. 4 J.
MATERIAL. LV-75-18, 55.4343°N 167.
2673ºE, dep h 1389 m, one specimen pho og aphed;
LV-75-21, 55.4818°N 167.2573ºE – 55.4772°N
167.2514ºE, dep h 2841–2732 m, ou specimens
pho og aphed.
REMARKS. Fi e specimens o he small species
we e pho og aphically documen ed on he sides o
la ge s ones on he no he n slope o he Vulcanol-
ogo Massi a 1389–2841 m (no collec ed). The
specimens ha e low column, wide a he base (up o
4 cm in diame e ), co e ed by cu icle. O al disc and
en acles a e pale- ose. The o al disc is wide (up o
3 cm in diame e ), wi h o al cone a i s cen e . The
en acles a e hin, i s leng h is up o he diame e o
he o al disc, wi hou mesogloeal hickenings, up o
50 may be coun ed in pho og aphs.
a . Ho ma hiidae sp.2
Fig. 4K.
MATERIAL. LV-75-18, 55.4336°N 167.
2673ºE, dep h 1349 m, one specimen pho og aphed.
REMARKS. Whi e sea anemone was pho o-
g aphed on he no he n slope o he Piip Volcano a
he dep h o 1349 m in 2016 in communi y o glass
sponge Fa ea spp. (see Rybako a e al., 2020). The
en acles a e hexame ously a anged in six cycles:
6+6+12+24+48+96= up o 192 (120 en acles a e
isible in he pho og aph). The leng h o he inne
en acles can be as la ge as he diame e o he o al
disc. B ownish adial dashed lines om he base o
he en acles o he mou h ex end on he o al disc
abo e he endocoels.
Family Saga iidae Gosse, 1858
Saga ioge on cali o nicus (Ca lg en, 1940)
Fig. 4L.
Saga ioge on cali o nicus: Eash-Loucks, Fau in,
2012: 43; Sanamyan e al., 2023: 3.
MATERIAL. LV-75-3, 55.4158°N 167.2738ºE,
dep h 355 m, h ee specimens pho og aphed; LV-
75-15, 55.3821°N 167.2614ºE, dep h 452 m, wo
specimens pho og aphed; LV-75-19, 55.382°N
167.2608ºE, dep h 453 m, one specimen pho o-
g aphed.
LV-82-1, 55.4171°N 167.2773ºE – 55.4160°N
167.2744ºE, dep h 386–373 m, se e al specimens
pho og aphed; LV-82-8, 55.382°N 167.2608ºE,
dep h 458 m, one specimen pho og aphed. LV-82-
11, 60.8528°N 174.3516ºE, dep h 534 m, wo spec-
imens pho og aphed; LV-82-12, 60.8549°N 174.
3485ºE – 60.8901°N 174.2908ºE, dep h 550–432 m,
h ee specimens collec ed (sample 1) and many spec-
imens pho og aphed; LV-82-14, 61.1188°N
174.9679ºE – 61.1351°N 174.9419ºE, dep h 684–
554 m, one specimen collec ed (sample 1) and many
specimens pho og aphed; LV-82-15, 61.1396°N
174.9352ºE – 61.1779°N 174.8708ºE, dep h 537–
417 m, se e al specimens collec ed (samples 3, 5,
45Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
10, 11, 12 and 13) and many specimens pho o-
g aphed; LV-82-16, 61.1787°N 174.8704ºE –
61.1899°N 174.8345ºE, dep h 416–356 m, wo spec-
imens collec ed (sample 2) and many specimens
pho og aphed; LV-82-17, 61.1806°N 174.8508ºE –
61.1801°N 174.8493ºE, dep h 402–401 m, wo spec-
imens collec ed (samples 4 and 6) and many speci-
mens pho og aphed; LV-82-19, 61.1538°N 175.
4492ºE – 61.1539°N 175.4492ºE, dep h 692–693 m,
one specimen collec ed (sample 2) and se e al spec-
imens pho og aphed; LV-82-20, 61.1713°N 174.
8810ºE – 61.1724°N 174.8794ºE, dep h 430–428 m,
one specimen collec ed (sample 4) and many speci-
mens pho og aphed.
PL-99-123, 61.215°N 174.888ºE – 61.202°N
174.865ºE, dep h 355–354 m, samples 24 and 25,
wo specimens collec ed.
PK-37-34, 61.088°N 174.574ºE – 61.101°N
174.586ºE, dep h 531–530 m, sample 15, one spec-
imen collec ed; PK-37-36, 61.113°N 174.507ºE –
61.124°N 174.527ºE, dep h 380–365 m, sample 16,
one specimen collec ed.
REMARKS. The species was pho og aphically
eco ded, bu no collec ed in 2016 on he sou he n
op o he Piip Volcano, jus nea he hyd o he mally
ac i e si e a 453 m. Se e al simila specimens we e
documen ed on he sou he n and no he n ops o he
Piip Volcano a 355–458 m. Many specimens we e
eco ded and some collec ed on he Ko yak slope (a
354–693 m), especially in me hane seeps si es, whe e
hey we e nume ous and occu ed on any a ailable
i m subs a e on muddy bo om: on pebbles, dead
shells and on he shells o li e gas opods o o
bi al e mollusks Calyp ogena and o he objec s.
The specimens a e no la ge (up o 8 cm in he heigh
and he diame e o he en acula c own), wi h a
ligh column and da k eddish-b own en acles. The
en acles a e nume ous, abou 200. In he shallow-
wa e me hane seeps on he Ko yak slope, hey
domina e in he communi ies a dep hs o 400–
402 m (see Galkin e al., 2019) and occu di ec ly on
bac e ial ma s.
Saga ioge on u us Sanamyan e al., 2023
Fig. 5A.
Saga ioge on u us Sanamyan e al., 2023: 5.
MATERIAL. LV-75-3, 55.4160°N 167.2732º
E – 55.4161°N 167.2739ºE, dep h 382–351 m, many
specimens pho og aphed; LV-75-8, 55.4161°N 167.
2736ºE – 55.4163°N 167.2750ºE, dep h 377–400 m,
many specimens pho og aphed; LV-75-9, 55.4156°N
167.2736ºE – 55.4160°N 167.2743ºE, dep h 388–
350 m, many specimens pho og aphed.
LV-82-1, 55.4171°N 167.2773ºE – 55.4160°N
167.2744ºE, dep h 386–373 m, se e al specimens
collec ed (samples 6 and 7) and many specimens
pho og aphed.
REMARKS. Nume ous small (up o 2 cm in
heigh ) ose-o ange specimens o m c owded se le-
men s on he no he n op o he Piip Volcano, o en
oge he wi h zoan ha ians Epizoan hus sp. o simi-
la size and colo . Howe e , he se lemen s o Sa-
ga ioge on u us a e spa se han he se lemen s o
he zoan a ians. Some imes hey o m se lemen s
nea he hyd o he mal si es oge he wi h ilamen-
ous colonies o bac e ia. This species has no been
ound elsewhe e. Se e al specimens we e collec ed.
Family Me idiidae Ca lg en, 1893
Me idium a cimen (B and , 1835)
Fig. 5B.
Ac inia a cimen B and , 1835: 12.
Me idium a cimen: Fau in, Hand, 2000: 1151 (and
synonymy); Sanamyan, Sanamyan, 2009: 158, 2010: 211
(and synonymy).
MATERIAL. VM-167, 59.5650ºN 165.2600ºE –
59.5500ºN 165.2300ºE, dep h 94 m, sample 19, one
specimen collec ed; VM-212, 58.7150ºN 162.
7633ºE – 58.7316ºN 162.7866ºE, dep h 30–29 m,
sample 26, one specimen collec ed.
REMARKS. This species is widely dis ibu ed
in he No h Paci ic. I has high smoo h column (up
o 1 m in heigh ) and nume ous ( housands) small
en acles which se e o ca ch small suspended in he
wa e column pa icles; he species is plank i o ous.
Nume ous eco ds o his species a e epo ed om
Ame ican coas s om Be ing S ai o Mexico and
om sub idal wa e s o 2740 m (Eash-Loucks, Fau-
in, 2012). On he Asia ic side o Paci ic, i was
epo ed om Sou heas Kamcha ka, whe e i s yp-
ical loca ion is in he A acha Bay (Fau in, Hand,
2000; Sanamyan, Sanamyan, 2009, 2010). Acco d-
ing o pe sonal obse a ions and unde wa e pho o-
g aphs o N. Sanamyan his species is abundan in
A achinsky and K ono sky Gul s. Also, his species
was pho og aphed in he i s echnical di e by ROV
in 2018 on he sou he n (Paci ic) side o Be ing
Island (Commande Islands) on 30–33 m and in
Chuko ka in he Senia in S ai (no he n pa o he
Be ing Sea) on he dep h 6–8 m (Fig. 5B; pe sonal
communica ion and pho o o Vik o Lyagushkin).
Me idium sp. eco ded by A e ince (1967) om
Sea o Japan (Possje Bay) p obably belongs o his
species. Me idium a cimen appea s o be e y
abundan in some pa s o he No hwes Paci ic:
mo e han 100 kg o his species was cap u ed pe
awling in h ee s a ion du ing bo om awl su ey
in he shel o he Ka aginsky subzone (Olyu o sky
and Ka aginsky Gul s) in he Be ing Sea in 2021 a
dep hs o 29–94 m (pe sonal communica ion o Ta as
Mo ozo ).
46 N.P. Sanamyan e al.
Fig. 5. A — Saga ioge on u us; B — Me idium a cimen om Chuko ka (pho o o Vik o Lyagushkin);
C — Ac inia ia sp.1; D — Ac inia ia sp.2; E — Ac inia ia sp.3; F — Ac inia ia sp.4; G — Ac inia ia sp.5;
H — Ac inia ia sp.6; I — Ac inia ia sp.7; J — he whi e o m o Co allimo phus c . pila us; K — he b own
o m o Co allimo phus c . pila us; L — Co allimo phidae sp.
Рис. 5. A — Saga ioge on u us; B — Me idium a cimen, Чукотка (фото Виктора Лягушкина); C —
Ac inia ia sp.1; D — Ac inia ia sp.2; E — Ac inia ia sp.3; F — Ac inia ia sp.4; G — Ac inia ia sp.5; H —
Ac inia ia sp.6; I — Ac inia ia sp.7; J — белая форма Co allimo phus c . pila us; K — коричневая форма
Co allimo phus c . pila us; L — Co allimo phidae sp.
47Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
Species no iden i ied o amily le el
Ac inia ia sp.1
Fig. 5C.
MATERIAL. LV-75-3, 55.4160°N 167.
2734ºE – 55.4161°N 167.2739ºE, dep h 384–351 m,
27 specimens pho og aphed; LV-75-9, 55.4158°N
167.2738ºE, dep h 379 m, one specimen pho o-
g aphed.
LV-82-1, 55.4163°N 167.2738ºE, dep h 348 m,
one specimen pho og aphed.
REMARKS. Abou 30 specimens o medium-
sized (up o 5–7 cm in diame e o he en acula
c own) whi e sea anemones we e de ec ed, bu no
collec ed, among he se lemen s o zoan ha ians and
Saga ioge on u us on he no he n op o he Piip
Volcano a 348–384 m. They ha e sho column and
long ape ing en acles a anged hexame ously in i e
cycles (6+6+12+24+48= up o 96), he o al disc is
small, almos comple ely co e ed by he en acles, he
o al cone is high. The species has some supe icial
simila i y wi h whi e Co allimo phus c . pila us, bu
di e s in i s ape ing en acles wi hou ac osphe es.
Ac inia ia sp.2
Fig. 5D.
MATERIAL. LV-75-2, 55.4166ºN 167.2749ºE –
55.4171ºN 167.2771ºE, dep h 403–367 m, se e al
specimens pho og aphed; LV-75-8, 55.4162ºN 167.
2736ºE – 55.4161ºN 167.2749ºE, dep h 378–386 m,
se e al specimens pho og aphed; LV-75-9, 55.
4155ºN 167.2736ºE – 55.4161ºN 167.2743ºE, dep h
394–349 m, se e al specimens pho og aphed.
LV-82-1, 55.4170°N 167.2770ºE – 55.4163°N
167.2738ºE, dep h 368–347 m, one specimen col-
lec ed (sample 7) and se e al specimens pho o-
g aphed; LV-82-8, 55.3765°N 167.2639ºE, dep h
668 m, h ee specimens pho og aphed.
REMARKS. This small sea anemone (up o 2–3
cm in he heigh and he diame e o he en acula
c own) appea s o be common on he no he n op o
he Piip Volcano a 347–403 m, and also pho o-
g aphed on he sou he n slope o he Piip Volcano a
668 m. I has sho beige o o ange-b ownish column
wide a he base and beige o o ange anspa en
en acles. Whi e colla on he ma gin unde he
en acles esembles a ci cle o pseudosphe ules in
he ex ended specimens. This species de ec ed on he
e ical sides and unde sides o la ge s ones among
small Saga iidae Saga ioge on u us and co alli-
mo pha ians. One specimen was collec ed.
Ac inia ia sp.3
Fig. 5E.
MATERIAL. LV-82-1, 55.4170ºN 167.2775ºE,
dep h 382 m, one specimen pho og aphed. LV-82-
11, 60.8405ºN 174.3804ºE – 60.8543ºN 174.3490ºE,
dep h 621–551 m, sample 1, wo specimens collec -
ed; LV-82-12, 60.8586ºN 174.3398ºE – 60.8635ºN
174.3266ºE, dep h 538–518 m, ou specimens pho-
og aphed; LV-82-13, 60.8333ºN 174.3739ºE – 60.
8387ºN 174.3688ºE, dep h 660–620 m, i e speci-
mens pho og aphed; LV-82-14, 61.1203ºN 174.
9650ºE – 61.1332ºN 174.9453ºE, dep h 664–565 m,
h ee specimens pho og aphed; LV-82-15, 61.
1500ºN 174.9179ºE – 61.1717ºN 174.8802ºE, dep h
499–433 m, 25 specimens pho og aphed; LV-82-
18, 61.1209ºN 174.9669ºE, dep h 662 m, one spec-
imen pho og aphed; LV-82-21, 60.8305ºN 174.
3770ºE – 60.8313ºN 174.3771ºE, dep h 679–674 m,
25 specimens pho og aphed.
REMARKS. Medium-sized bu owing sea anem-
one; only i s uppe pa , a scapulus wi h he en acles,
is isible abo e he su ace o bo om. The diame e
o he en acula c own is abou 4 cm. The en acles
a e da k, di ec ed upwa d and sligh ly o he sides
(i.e. hey do no s and ho izon ally and do no ouch
he subs a e). The en acles a e conical, p obably 24
in numbe , usually lilac o eddish-b own o pale
wi h wo ans e se da k bands o he same in ; he
ips may be whi e. The scapulus is pale o whi e wi h
a eddish-b own band in i s uppe pa , composed o
e ical lines be ween he inse ions o he mesen e -
ies. This colo band may be poo ly de ined on some
specimens. The scapus is co e ed wi h cu icle and
i m laye o sand and g a el. One specimen o his
species was pho og aphically documen ed on he
no he n op o he Piip Volcano a 382 m, while on
he Ko yak slope i occu ed a he o en a 433–
679 m, whe e 65 specimens we e pho og aphed, wo
o which we e collec ed.
Ac inia ia sp.4
Fig. 5F.
MATERIAL. LV-75-18, 55.4420°N 167.2627ºE
– 55.4341°N 167.2676ºE, dep h 1733–1377 m, se -
en specimens pho og aphed.
REMARKS. O ange sea anemone o medium
size anemone (up o 8–9 cm in he diame e o he
en acula c own), wi h sho column and e y long
en acles. The inne en acles can be mo e han wo
imes longe han he diame e o he o al disc.
Usually occu s on he sides o la ge s ones. Se en
specimens we e pho og aphed (bu no collec ed) on
he no he n slope o he Piip Volcano in he lowe
ba hyal zone a 1377–1733 m.
Ac inia ia sp.5
Fig. 5G.
MATERIAL. LV-82-5, 55.2616°N 167.
3025ºE – 55.2698°N 167.2992ºE, 3931–3547 m, one
48 N.P. Sanamyan e al.
specimen collec ed (sample 2) and i e specimens
pho og aphed; LV-82-10, 55.2879°N 167.3014ºE,
dep h 2807 m, wo specimens pho og aphed.
REMARKS. A small abyssal sea anemone wi h
a whi e anslucen body, eigh specimens o which
we e pho og aphed and one collec ed on he sou h-
e n slope o he Vulcanologo Massi a dep hs o
2807–3931 m in 2018. All specimens ha e a low
column o simila heigh and wid h; he o al disc is
sligh ly wide han he column. The en acles a e
ma ginal, a anged in wo cycles, up o 36 in numbe .
Whi e o a a e isible in he en acles and h ough he
o al disc in hal o he specimens.
Ac inia ia sp.6
Fig. 5H.
MATERIAL. LV-82-14, 61.1326°N 174.
9450ºE – 61.1333°N 174.9453ºE, dep h 570–565 m,
ou specimens pho og aphed; LV-82-15, 61.1380°N
174.9382ºE – 61.1401°N 174.9347ºE, dep h 550–
536 m, wo specimens pho og aphed.
REMARKS. Medium sized (up o 8 cm in he
heigh and he diame e o he en acula c own)
da k, plain b ownish- iole sea anemones occu ing
on pebbles o ano he ha d subs a e on muddy
bo om. High cylind ical column is much wide
dis ally, he o al disk h ee imes wide han he
column. The en acles a e a anged in i e cycles,
conical, no longe han he adius o he o al disc.
Six specimens a e pho og aphed (bu no collec ed)
on he Ko yak slope in backg ound communi y dom-
ina ed by b i le s a s Ophioph halmus no mani (Ly-
man, 1879) a 536–570 m.
Ac inia ia sp.7
Fig. 5 I.
MATERIAL. LV-75-2, 55.4172ºN 167.2766ºE,
dep h 380 m, one specimen pho og aphed; LV-75-
3, 55.4165ºN 167.2759ºE, dep h 390 m, se en spec-
imens pho og aphed.
REMARKS. Eigh specimens o his small (abou
2–3 cm in heigh ) species we e pho og aphed bu no
collec ed a 380–390 m on he no he n op o he
Piip Volcano. The specimens o his species a e
a ached o he s ones, hey ha e high column (wi h
wide basal hal ) di isible in o scapus co e ed by
yellow-b ownish cu icle and whi e ba e scapulus.
Longi udinal lines, p obably inse ions o he me-
sen e ies a e isible on he column. Mesen e ies
a anged p obably in h ee cycles. Da k en acles a e
p obably a anged in ou cycles. The specimens o
his species occu on he uppe and lowe su aces o
he s ones, ei he soli a ily o in g oups. I esembles
membe s o he amily Ba hyphelliidae Ca lg en,
1932 o ela ed amilies.
Ac inia ia spp.
MATERIAL. LV-75-17, 55.4445ºN 167.2626ºE,
dep h 1819 m, one specimen pho og aphed.
LV-82-8, 55.3765°N 167.2639ºE, dep h 668 m,
h ee specimens pho og aphed; LV-82-10, 55.
2879°N 167.3014ºE – 55.2898°N 167.2974ºE, dep h
2807–2638 m, se e al specimens o 5 species pho o-
g aphed. LV-82-15, 61.1512°N 174.9148ºE – 61.
1774°N 174.8715ºE, dep h 494–460 m, wo speci-
mens pho og aphed; LV-82-16, 61.1869°N 174.
8397ºE – 61.1902°N 174.8347ºE, dep h 373–356 m,
i e specimens pho og aphed; LV-82-18, 61.1196°N
174.9676ºE – 61.1201°N 174.9635ºE, dep h 670–
652 m, wo specimens pho og aphed.
REMARKS. Abou 10 species o unde e mined
Ac inia ia ha we e pho og aphed bu no collec ed
and canno be iden i ied: 6 on he Vulcanologo
Massi and 2–4 species on he Ko yak slope. Mos o
hem a e bu owing species o small species li ing
on he s ones which we e di icul o collec by he
manipula o o he ROV.
O de Co allimo pha ia
Family Co allimo phidae He wig, 1882
Co allimo phus c . pila us Fau in, Whi e
e Pea son, 2002
Fig. 5 J, K.
Co allimo phus pila us Fau in e al., 2002: 118; Eash-
Loucks, Fau in, 2012: 9.
MATERIAL. AMK-22-2310, 55.3896°N 167.
2616°E – 55.385°N 167.2566°E, dep h 602–750 m,
d edge 1; 55.3753°N 167.2468°E – 55.3833°N 167.
265°E, dep h 580–750 m, d edge 2; eigh specimens
collec ed. AMK-22-2311, subme sible Mi -1, di e
6/50: 55.4166°N 167.272°E, dep h 410 m, sample 3;
55.4163°N 167.2721°E, dep h 409 m, sample 4; 55.
4161°N 167.2723°E, dep h 396 m, sample 5; 24
specimens collec ed. AMK-22-2320, subme sible
Mi -2, di e 15/48: 55.3858°N 167.2583°E, dep h
524 m, sample 2, one specimen collec ed.
LV-75-1, 55.4246ºN 167.2903ºE, dep h 1053
m, one specimen pho og aphed; LV-75-2, 55.4173ºN
167.2766ºE – 55.4165ºN 167.2749ºE, dep h 381–
407 m, one specimen collec ed (sample 2) and many
specimens pho og aphed; LV-75-3, 55.4165ºN 167.
2735ºE – 55.4164ºN 167.2759ºE, dep h 386–390 m,
many specimens pho og aphed; LV-75-4, 55.4165ºN
167.2749ºE – 55.4167ºN 167.2759ºE, dep h 390–
399 m, many specimens pho og aphed; LV-75-5,
55.4166ºN 167.2749ºE – 55.4166ºN 167.2755ºE,
dep h 372–394 m, one specimen collec ed (sample
2) and many specimens pho og aphed; LV-75-6, 55.
4166ºN 167.2743ºE – 55.4165ºN 167.2762ºE, dep h
49Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
372–396 m, many specimens pho og aphed; LV-
75-7, 55.4174ºN 167.2747ºE – 55.4166ºN 167.
2752ºE, dep h 421–409 m, many specimens pho o-
g aphed; LV-75-8, 55.4163ºN 167.2755ºE – 55.
4161ºN 167.2749ºE, dep h 407–386 m, ou speci-
mens collec ed (sample 1) and many specimens
pho og aphed; LV-75-9, 55.4180ºN 167.2760ºE –
55.4161ºN 167.2742ºE, dep h 424–349 m, many
specimens pho og aphed; LV-75-10, 55.4169ºN 167.
2744ºE – 55.4172ºN 167.2748ºE, dep h 407–411 m,
many specimens pho og aphed; LV-75-11, 55.
3821ºN 167.2609ºE, dep h 470 m, h ee specimens
collec ed (sample 1) and many specimens pho o-
g aphed; LV-75-12, 55.3823ºN 167.2608ºE – 55.
3810ºN 167.2611ºE, dep h 468–474 m, many spec-
imens pho og aphed; LV-75-13, 55.3822ºN 167.
2608ºE – 55.3826ºN 167.2605ºE, dep h 466–472 m,
one specimen collec ed (sample 1) and a ew speci-
mens pho og aphed; LV-75-14, 55.3822ºN 167.
2611ºE – 55.3820ºN 167.2607ºE, dep h 460–465 m,
a ew specimens pho og aphed; LV-75-15, 55.
3822ºN 167.2612ºE – 55.3821ºN 167.2612ºE, dep h
466–459 m, se e al specimens collec ed (sample 1)
and many specimens pho og aphed; LV-75-19, 55.
3822ºN 167.2625ºE – 55.3819ºN 167.2606ºE, dep h
494–453 m, a ew specimens pho og aphed; LV-75-
20, 55.3824ºN 167.2618ºE – 55.3822ºN 167.2611ºE,
dep h 481–470 m, many specimens pho og aphed;
LV-75-21, 55.4812ºN 167.2572ºE, dep h 2834 m,
one specimen pho og aphed; LV-75-22, 55.5100ºN
167.3240ºE – 55.5087ºN 167.3236ºE, dep h 3561–
3545 m, i e specimens pho og aphed.
LV-82-1, 55.4171ºN 167.2773ºE – 55.4165ºN
167.2763ºE, dep h 386–382 m, se e al specimens
collec ed (samples 3 and 7) and many specimens
pho og aphed; LV-82-2, 55.4167ºN 167.2764ºE –
55.4158ºN 167.2766ºE, dep h 383–400 m, many
specimens pho og aphed; LV-82-3, 55.3827ºN 167.
2626ºE – 55.3816ºN 167.2608ºE, dep h 492–464 m,
se e al specimens collec ed (samples 1, 2 and 3) and
many specimens pho og aphed; LV-82-4, 55.3817ºN
167.2612ºE – 55.3820ºN 167.2611ºE, dep h 465–
451 m, many specimens pho og aphed; LV-82-8,
55.3814ºN 167.2617ºE – 55.3825ºN 167.2617ºE,
dep h 469–475 m, se e al specimens collec ed (sam-
ples 2 and 7) and many specimens pho og aphed.
REMARKS. The specimens a e o mode a e
size, e y abundan on he uppe slope and op o he
Piip Volcano a 372–1053 m. The whi e o m (Fig.
5 J) wi h b igh -whi e ac osphe es a he ip o he
en acles domina es on he no he n op, occu s nea
bac e ial ma s. The b own o m wi h whi e ac o-
sphe es domina es a he sou he n op (Fig. 5K) and
occu s di ec ly on he seeps on bac e ial ma s. The
species is hexame ous wi h up o i e cycles o he
ma ginal en acles, 12 ( wo cycles) discal en acles
loca ed in he endocoels o he i s and he second
cycles. La ge specimens ha e abou 12 discal and 49
ma ginal en acles ( he a io is 1:4, as in C. pila us).
The heigh and diame e o he p ese ed specimens
is up o 16 mm. The e a e 12 pai s o pe ec mesen-
e ies and e y small misc ocnemes o hi d and
ou h cycles. Co allimo phus pila us appea o be
mos closely ela ed o he p esen specimens, i s
o iginal desc ip ion is based on nume ous specimens
om 198–900 m in he eas e n Paci ic om B i ish
Columbia o Sou he n Cali o nia. Subsequen ly i
was ound om much g ea e dep hs (up o 2000 m)
(Eash-Loucks, Fau in, 2012). Some specimens e-
po ed he e we e pho og aphed a g ea dep h (3545–
3561 m) on he no he slope o he Piip Volcano,
hei mo phology and ex e nal appea ance a e simi-
la o hose om shallowe wa e s. Ano he deep-sea
species (2834 m, one specimen in he pho o) di e s
signi ican ly om o he specimens eco ded on he
Vulcanologo Massi in i s da k bluish-b own colo ,
body shape, high o al cone and, possibly, mo e
nume ous discal en acles.
Co allimo phidae sp.
Fig. 5L.
MATERIAL. LV-75-1, 55.4246ºN 167.2903ºE,
dep h 1053 m, one specimen pho og aphed; LV-75-
2, 55.4173ºN 167.2766ºE – 55.4165ºN 167.2749ºE,
dep h 381–407 m, many specimens pho og aphed;
LV-75-3, 55.4165ºN 167.2735ºE – 55.4164ºN 167.
2759ºE, dep h 386–390 m, many specimens pho o-
g aphed; LV-75-4, 55.4165ºN 167.2749ºE – 55.
4167ºN 167.2759ºE, dep h 390–399 m, many spec-
imens pho og aphed; LV-75-5, 55.4166ºN 167.
2749ºE – 55.4166ºN 167.2755ºE, dep h 372–394 m,
eigh specimens collec ed (sample 2) and many spec-
imens pho og aphed; LV-75-7, 55.4174ºN 167.
2747ºE – 55.4166ºN 167.2752ºE, dep h 421–409 m,
many specimens pho og aphed; LV-75-8, 55.4163ºN
167.2755ºE – 55.4161ºN 167.2749ºE, dep h 407–
386 m, one specimen collec ed (sample 1) and many
specimens pho og aphed; LV-75-9, 55.4180ºN 167.
2760ºE – 55.4161ºN 167.2742ºE, dep h 424–349 m,
many specimens pho og aphed; LV-75-10, 55.
4169ºN 167.2744ºE – 55.4172ºN 167.2748ºE, dep h
407–411 m, many specimens pho og aphed; LV-
75-12, 55.3823ºN 167.2608ºE – 55.3810ºN 167.
2611ºE, dep h 468–474 m, many specimens pho o-
g aphed; LV-75-13, 55.3822ºN 167.2608ºE – 55.
3826ºN 167.2605ºE, dep h 466–472 m, h ee spec-
imens collec ed (sample 1) and many specimens
pho og aphed; LV-75-20, 55.3824ºN 167.2618ºE –
55.3822ºN 167.2611ºE, dep h 481–470 m, many
specimens pho og aphed.
LV-82-1, 55.4171ºN 167.2773ºE – 55.4165ºN
167.2763ºE, dep h 386–382 m, many specimens
pho og aphed; LV-82-2, 55.4167ºN 167.2764ºE –
50 N.P. Sanamyan e al.
55.4158ºN 167.2766ºE, dep h 383–400 m, se e al
specimens collec ed (sample 7) and many specimens
pho og aphed; LV-82-3, 55.3827ºN 167.2626ºE –
55.3816ºN 167.2608ºE, dep h 492–464 m, many
specimens pho og aphed; LV-82-4, 55.3817ºN 167.
2612ºE – 55.3820ºN 167.2611ºE, dep h 465–451 m,
many specimens pho og aphed; LV-82-8, 55.3806ºN
167.2617ºE – 55.3825ºN 167.2617ºE, dep h 485–
475 m, se e al specimens collec ed (sample 7) and
many specimens pho og aphed.
REMARKS. This small (up o 1.5 cm in he
heigh and he diame e o he en acula c own)
species occu s on bo h ops o he Piip Volcano
oge he wi h la ge Co allimo phus c . pila us and
small Saga ioge on u us. The specimens a e whi e,
anslucen ; longi udinal s ips o whi e ilamen s o
gonads a e isible h ough he cylind ical column.
The pedal disc is expanded and wide han he
column, o en o ms a kind o lobes and ou g ows
cha ac e is ic o pedal lace a ion. This species does
no ha e discal en acles cha ac e is ic o Co alli-
mo phus; he e a e ou cycles o ma ginal en acles
a anged hexame ously. Some imes hey occu di-
ec ly among he bac e ial se lemen s on he seeps.
Se e al specimens ha e been collec ed. The g ea es
dep h eco ded om a pho og aph o his species is
1053 m (on he dead glass sponge Fa ea sp.).
O de Zoan ha ia
Family Epizoan hidae Delage e Hé oua d,
1901
Epizoan hus a uus (Schul ze, 1860)
Fig. 6A.
Paly hoa a ua Schul ze, 1860: 36.
MATERIAL. LV-75-16, 55.5774ºN 167.3258ºE,
dep h 4277 m, one colony pho og aphed; LV-75-
22, 55.5134ºN 167.3270ºE – 55.5087ºN 167.3236ºE,
dep h 3602–3534 m, h ee colonies pho og aphed.
LV-82-5, 55.2698ºN 167.2995ºE – 55.2738ºN
167.2974ºE, dep h 3520–3435 m, wo colonies col-
lec ed (samples 7 and 8) and one colony pho o-
g aphed.
REMARKS. Deep-wa e colonial zoan a ian
g owing on he s em o glass sponge o he genus
Hyalonema. The species is eco ded in he abyssal
zone on he no he n and sou he n slopes o he
Vulcanologo Massi and in he Komando G aben
om 3435 o 4277 m; wo colonies we e collec ed.
The zooids densely co e he sponge s em composed
o bundle o spicules. They ex end om he lo e
pa o he s em, along he whole i s leng h, o he
body o he sponge loca ed on he op o he s em.
They a e also ound on he dead s ems which ha e no
body o he sponge a he end (Fig. 6A) some imes
inhabi ed by o he o ganisms (hyd oids o sea anem-
ones, Fig. 2A). Zooids a e whi e, up o 2–3 cm high
and ha e wo cycles o he en acles.
Epizoan hus sp.
Fig. 6B.
MATERIAL. AMK-22-2311, subme sible Mi -
1, di e 6/50, 55.4163°N 167.2816°E, dep h 358 m,
sample 1, 80 specimens collec ed.
LV-75-2, 55.4169ºN 167.2755ºE, dep h 381 m,
se e al specimens pho og aphed; LV-75-3, 55.
4160ºN 167.2732ºE – 55.4161ºN 167.2739ºE, dep h
382–351 m, many specimens pho og aphed; LV-
75-8, 55.4162ºN 167.2736ºE, dep h 378 m, many
specimens pho og aphed; LV-75-9, 55.4155ºN 167.
2736ºE – 55.4161ºN 167.2742ºE, dep h 394–349 m,
many specimens pho og aphed.
LV-82-1, 55.4165ºN 167.2767ºE – 55.4160ºN
167.2743ºE, dep h 382–349 m, many specimens
collec ed (sample 7) and many specimens pho o-
g aphed; LV-82-2, 55.4160ºN 167.2769ºE, dep h
372 m, many specimens pho og aphed; LV-82-4,
55.3809ºN 167.2604ºE, dep h 478 m, se e al spec-
imens collec ed (sample 4) and many specimens
pho og aphed.
REMARKS. The species o ms con inuous “ca -
pe s”, o en nea he se lemen s o Saga ioge on
u us, on he mos shallow-wa e zone o he no h-
e n op o he Piip Volcano om 349 o 394 m. The
numbe o specimens eaches 60–70 pe squa e
decime e , some o hem we e collec ed. Thei zoo-
ids a e yellow-o ange, wi h cylind ical column up o
2–3 cm in heigh , enc us ed wi h sedimen pa icles
and o amini e s; he en acles a e o ganized in wo
cycles. S. u us and zoan ha ians a e simila in size
and colo , a e o en loca ed nex o each o he and
can be con used. Howe e , he se lemen s o S.
u us a e spa se and o he species can se le among
hem, while he e a e almos no o he species o sea
anemones among he zoan ha ians. Se lemen s o
zoan ha ians we e also eco ded on he sou he n op
o he Piip Volcano, bu hey a e less nume ous
he e. The deepes eco d is 478 m on he sou he n
op o he Piip Volcano.
Zoan ha ians no iden i ied o amily le el
Zoan ha ia spp.
Fig. 6C.
MATERIAL. LV-75-22, 55.5100ºN 167.3240ºE
– 55.5087ºN 167.3236ºE, dep h 3561–3545 m, se -
e al specimens pho og aphed.
LV-82-5, 55.2616ºN 167.3025ºE – 55.2647ºN
167.3014ºE, dep h 3931–3879 m, one specimen
pho og aphed; LV-82-10, 55.2879°N 167.3014ºE,
51Ac inia ia, Co allimo pha ia and Zoan ha ia om he Wes e n Be ing Sea
dep h 2807 m; 55.2882ºN 167.3011ºE, dep h 2778 m,
one specimen pho og aphed.
REMARKS. Small whi e specimens on s ones
we e pho og aphed in he abyssal zone. On he
sou he n slope o he Vulcanologo Massi , wo
species ha e been eco ded: a g oup o a leas 7
specimens wi h a long column co e ed wi h sedi-
men pa icles (Fig. 6C), and soli a y specimens wi h
a sho whi e column. Ano he smalle species wi h
a sho whi e column occu s in small g oups on he
no he n slope o he Vulcanologo Massi .
Discussion
Abou 80 species sea anemones a e epo ed
o which 40 we e collec ed (36 species o Ac in-
ia ia, wo Co allimo pha ia and wo Zoan ha -
ia), o he species we e iden i ied basing on
pho o and ideo eco ds. 17 o hem we e iden-
i ied o he species le el (one basing on he
pho og aphs only), mos o emaining species
equi e desc ip ion as new species. 33 sea anem-
ones we e iden i ied o he genus le el (12
basing on pho og aphs only), se en o hese
gene a a e ep esen ed mo e han in one species
(Edwa dsia, C ib inopsis, U icina, Ac inos o-
la, c . Halcampa, Amphian hus, Phelliac is).
18 amilies we e iden i ied, i e o hem only on
he pho og aphs (Relican hidae, Edwa dsiidae,
P eac iniidae, Halcampidae, Halcampoididae).
16 amilies belong o he o de Ac inia ia (o e
70 species), one amily o he o de Co alli-
mo pha ia (Co allimo phidae, wo species in
wo gene a) and one o Zoan ha ia (Epi-
zoan hidae, wo species o Epizoan hus and
h ee no collec ed species on he pho og aphs
only). Only 13 species (11 species o Ac inia ia,
one o Co allimo pha ia and one o Zoan ha ia)
we e p e iously known o science bu ha e no
been epo ed o wes e n pa o he Be ing Sea
and only wo o hem, Liponema b e ico ne and
Me idium a cimen, we e epo ed o eas e n
pa o he Be ing Sea. Fou species o he
p esen ma e ial (Sicyonis deniso i, Sicyonis
kuzne so i, Ophiodiscus bukini and Tealidium
konoplino um) ha e been al eady desc ibed as
new o science (Sanamyan e al., 2021) and
hey a e known only o wes e n pa o he
Be ing Sea.
O he 17 species iden i ied in he p esen
wo k, 10 species (59%) a e known om eas e n
Paci ic Ocean (Supplemen Table 2): Relican-
hus daphneae, P ychodac is pa ula, Liponema
b e ico ne, Ac inos ola aeculen a, S omphia
coccinea, Ac inauge e illii, Pa acalliac is
in ol ens, Me idium a cimen, Saga ioge on
cali o nicus and Co allimo phus pila us. Two
la e species we e p e iously ea ed as endem-
ics o no heas e n Paci ic by Eash-Loucks and
Fau in (2012: 49): “Species ha mos ly occu
abo e 2000 m (Co allimo phus pila us om
250 o 2026 m, and Saga ioge on cali o nicus
om 73 o a leas 1463 m) appea endemic o
he no heas e n Paci ic.” These au ho s s a ed
ha he g owing oxygen minimum zone (OMZ),
na u ally occu ing in No heas Paci ic, poses
he bigges h ea o hese species occu ing
wi hin he dep h ange o he OMZ in he no h-
eas e n Paci ic Ocean and said o ha e es ic ed
geog aphical anges. We disco e ed ha ange
o geog aphical dis ibu ion o hese species is
much wide and hey dis ibu ed also in no h-
wes e n Paci ic, whe e hey a e especially nu-
Fig. 6. A — Epizoan hus a uus; B — Epizoan hus sp.; C — Zoan ha ia sp. om he sou he n slope o he
Piip Volcano.
Рис. 6. A — Epizoan hus a uus; B — Epizoan hus sp.; C — Zoan ha ia sp. на южном склоне вулкана
Пийпа.
