SERPENT Image & Video Database
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Comb Jelly
No full textA ctenophore drifting past the ROV's cameras.
The cilia can be seen reflecting the lights of the vehicle
Echinothuriid
No full textWalking over the seabedAn echinothuriid sea urchin.
The hooves on the spines are diagnostic for what Mortensen called asthenosomine echinothurioids. (This basically excludes only the Phormosoma group).
Notice the dark tips of the aboral spines; these are venom-bearing tissues.
There are 8 genera in the group with hooves on the spines the ambulacral plating strongly suggests a Sperosoma or a Tromikosoma
Decapod and pennatulid
No full textAn unidentified pennatulid on the seabed with a decapod crustacean close by
Teuthidodrilus sp.
No full textThis is a species of Teuthidodrilus ("squidworm", and acrocirrid polychaete). There is a single species described from the Celebes sea, Teuthidodrilus samae. Video from 2004 Indian Ocean SERPENT project in a similar area but much shallower (1014 m) had different postures and swimming behaviour than the Celebes Sea one: http://archive.serpentproject.com/231
Holothurian
No full textNeed to see vertical view, but likely to be Pelopatides.
Very difficult taxonomy with lots of species to choose from in the Indian Ocean. Pelopatides dissidens (1269m Indian margin), P. gelatinosa (4787m Andaman), P. insignis (1220m, Bay of Bengal), P. mammillatus (2710m Arabian Sea – there is a picture of this species in Billett et al. 2006 jelly detritus paper), P. modestus (896m, Indian margin), P. mollis (477m Bay of Bengal), P. ovalis (815-930m Bay of Bengal), P. quadridens (660-3035, Indonesia, Sumatra) and P. verrucosus (896-1251m, Indian margin)
Actinoscyphia sp.
No full textA venus flytrap anemone (Actinoscyphia sp.) attached to the stalk of a dead glass sponge at the seabe
Hermit crab and anemone
No full textThe anemone, Epizoanthus sp. is on the shell of the hermit crab Parapagurus sp.These hermit crabs are of the Parapaguridae with anemones on the shells.
Given the depth, the hermits in these photos are almost certainly of the genus Parapagurus. The differences between species are often quite subtle, so it is impossible to say for certain which species are shown.
There are 4 species of Parapagurus reported from this area. They are likely either P. bouvieri or P. andreui, or perhaps even both species. Both associate with Epizoanthus spp., but they can occasionally be found in shells where the coelenterate is not as well developed and only partially covers the housing.
P. pilosimanus is found only in the Atlantic (both sides), and so far have not seen any from the Indian Ocean
Monorhaphis sp
No full textHexactinellid sponge, possibly Monorhaphis sp. with a brisingid sea star on it
Benthocodon sp.
No full textThese animals drift slowly over the surface of the sediment apparently feeding on copepods and organic material on the sedimentThis hydromedusa is probably Benthocodon (perhaps B. pedunculata). However, the genus may be Voragonema. Without a higher resolution image or a properly preserved specimen, it is impossible to be certain.
These are common in the benthic boundary zone in all the oceans. They apparently feed on copepods, perhaps too, the organic fluff that carpets the sea floor