Marine Institute
SeaRover Dive Video

D665 Transect 24 Muddy slope hosting a variety of Foraminifera, burrowing fauna, mainly cerianthids, and Pentametrocrinus atlanticus. No major/abrupt biotope transitions occur. P1. Water depth: 1140m. Feature: Slope

Highlights: Xenophyophores - Syringamma fragilis Anemone & crinoid Chimaera Anemone Birdbeak dogfish - Deania calcea Pink starfish

Of note: Very little fauna present.

The seafloor throughout is entirely flat sand with no features. The fauna predominately consists of mobile crinoids, anemones, hermit crabs and echinoids. The fish are Lepidion eques, eels, chimerids and grenadiers. One very large asteroid (cushion like) is observed.

START VIDEO [00:00:00]/13:36. Muddy slope hosting a variety of Foraminifera, burrowing fauna, mainly cerianthids, and Pentametrocrinus atlanticus. No major/abrupt biotope transition occur. [1] [00:01:00] The first part of the transect, Syringammina fragilissima dominate . [00:31:00] [2] The second half of the transect is dominated by cerianthids and P. atlanticus. [00:34:45] Birdbeak dogfish shark Deania sp. spotted swimming by. [00:37:00] plastic sheet. [00:52:00] Large regular starfish. END VIDEO [01:18:00]/14:36.

Progression Start Duration Code Name
1[00:00:00]00:31:22M.AtMB.Mu.XenCom.SyrFraSyringammina fragilissima field on Atlantic mid bathyal mud
2[00:31:23]00:46:42M.AtMB.Mu.BurAneBurrowing anemone field in Atlantic mid bathyal mud

Foraminifera
Syringammina fragilissima : 261 : F
Cnidaria
Cerianthidae sp. 1 : 2 : F
Actiniaria sp. 20 : 605 : R
cf. Halcampoididae sp. : 984 : R
Sagartidae sp. (wide oral disc) : 1118 : F
Bolocera tuediae : 12 : R
Phelliactis sp. 1 : 255 : R
Epizoanthus sp. 1 (Paguridae associated) : 317 : R
Acanella arbuscula : 585 : R
Umbellula sp. : 581 : R
Arthropoda
Munida tenuimana : 339 : R

Paguridae sp. : 205 : R
Caridea (indet.) : 1077 : R
Mollusca
Teuthida sp. 1 : 1017 : R
Echinodermata
Pentametrocrinus atlanticus : 436 : F
Crinoidea sp. 1 : 131 : O
Zoroaster fulgens : 988 : O
Pseudarchaster sp. 1 : 433 : R
Hygrosoma sp. : 1125 : R
Phormosoma placenta : 555 : F
Echinoidea sp. 1 : 279 : R
Holothuroidea sp. (pink deep) : 1179 : R
Chordata

Deania calcea : 1139 : R
Hydrolagus cf. mirabilis : 1024 : R
Synaphobranchus kaupii : 440 : R
Molva molva : 654 : R
Nezumia aequalis : 1003 : R
Lepidion eques : 249 : R
Mora moro : 349 : R
Polyacanthonotus rissoanus : 552 : R
cf. Rouleina attrita : 1074 : R
Actinopterygii sp. 3 : 930 : R

Number of species = 32

© Marine Institute, MERC Consultants, Bernard Picton 2022