Amphianthus spp.

Sanamyan, N. P., Sanamyan, K. E., Bocharova, E. S., Morozov, T. B. & Galkin, S. V., 2023, Sea anemones (Actiniaria, Corallimorpharia and Zoantharia) from the Western Bering Sea (Northwest Pacific), Invertebrate Zoology 20 (1), pp. 27-56 : 43

Amphianthus spp.

Fig. 4D, E .

MATERIAL. AMK-22-2308, 55.412°N 167. 2345ºE, depth 1200 m, submarine Mir-2, dive 5/46, six specimens collected.

LV-75-17, 55.4666°N 167.2754ºE, depth 2486 m, sample 1, several specimens collected; LV-75-21, 55.4733°N 167.2527ºE – 55.4633°N 167. 2547ºE, depth 2645– 2509 m, several tens specimens photographed.

LV-82-7, 55.3729°N 167.2655ºE, depth 830 m, several specimens photographed.

REMARKS. Small sea anemones attached to the branches of gorgonian corals. The genus Amphianthus contains 24 species, most of which come from deep water. However, only four species of this genus are known in Pacific Ocean, and all are based on few records. The specimens photographed by ROV in 2016 on the northern slope of the Vulcanologov Massif (some of which were collected) at 2486– 2645 m have almost white or pale-rose coloration of the same color as the gorgonarians to which they are attached ( Fig. 4D ). The specimens photographed in 2018 on the southern slope of the Piip Volcano at a shallower depth of 830 m are of saturate rose color and probably belong to another species ( Fig. 4E ).

Figures

Fig. 4. A — Halcampidae sp. from the northern slope of the Piip Volcano; B — Halcampidae sp. from the Komandor Graben; C — cf. Halcampoides sp.; D — Amphianthus sp. from the northern slope of the Piip Volcano; E — Amphianthus sp. from the southern slope of the Piip Volcano; F — Paracalliactis cf. involvens; G — Hormathia sp.; H — Phelliactis sp. from the northern slope of the Piip Volcano; I — Phelliactis sp. from the southern slope of the Piip Volcano; J — aff. Hormathiidae sp. 1; K — aff. Hormathiidae sp. 2; L — Sagartiogeton californicus. Рис. 4. A — Halcampidae sp. на северном склоне вулкана Пийпа; B — Halcampidae sp. в грабене Командор; C — cf. Halcampoides sp.; D — Amphianthus sp. на северном склоне вулкана Пийпа; E — Amphianthus sp. на южном склоне вулкана Пийпа; F — Paracalliactis cf. involvens; G — Hormathia sp.; H — Phelliactis sp. на северном склоне вулкана Пийпа; I — Phelliactis sp. на южном склоне вулкана Пийпа; J — aff. Hormathiidae sp. 1; K — aff. Hormathiidae sp. 2; L — Sagartiogeton californicus.