SeaRover Dive Video

D661 Transect 35 Muddy slope with scarce epifauna, including Phormosoma placenta and Phelliactis sp. Frequent animal marks (possibly echinoderms) and burrows. P1. Water depth: 1860m. Feature: Muddy slope

Highlights: Anemone - Phelliactis Fish Jellyfish? Purple sea cucmber

Of note: Paucity of epifauna.

The seafloor here is primarily composed of soft sediment with bioturbation. Epifauna are rare but include the anemone Phelliactis sp. and the echinoid Phormosoma. Fish species encountered include eel-like fish, chimerids and a bent nose rabbitfish.

START VIDEO [00:00:00]/02:10. Muddy slope with scarce epifauna, including Phormosoma placenta and Phelliactis sp. . Frequent animal marks (poss Echinodermata) and burrows. [1] The entire dive is characterized by a single biotope of soft sediment with sparse epifauna. [00:01:00] ROV stops for two pushcores sampling. [00:05:00] obscured/mud cloud. [00:17:00] ROV stops for imagery and sampling of Phelliactis sp. attached to a ceramic pot. [00:30:00] ceramic pot. [01:11:00] Rusty tank on seafloor with Phelliactis sp. living on it. END VIDEO [01:17:00]/03:07.

Progression	Start	Duration	Code	Name
1	[00:00:00]	01:17:57	M.AtLB.Mu	Atlantic lower bathyal mud

Porifera
Porifera cylindrical sp. 2 : 1075 : R
Cnidaria
Cerianthidae sp. 1 : 2 : R
Actiniaria sp. 20 : 605 : R
cf. Halcampoididae sp. : 984 : R
Phelliactis sp. 1 : 255 : F
cf. Halipteris sp. : 1060 : R
Pennatulacea sp. 3 (submerged axis) : 1191 : R
Arthropoda
Munidopsis sp. : 1126 : R

Munnopsidae sp. : 1102 : R
Colossendeis sp. 1 : 1059 : R
Echinodermata
Pterasteridae sp. : 1115 : R
Echinidae sp. (white) : 559 : R
Phormosoma placenta : 555 : F
Benthogone sp. : 432 : R
Benthothuria sp. : 1124 : O
Chordata
Synaphobranchus kaupii : 440 : R
Coryphaenoides guentheri : 577 : R

Macrouridae sp. (cf. Coelorhynchus) : 1172 : R
Mora moro : 349 : R
Notacanthiformes sp. 1 : 1012 : R
Actinopterygii sp. 3 : 930 : R

Number of species = 21



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