Marine Institute
SeaRover Dive Video

D680 Transect 31 Gentle/moderate muddy slope with dominant burrowing anemones and occasional sea pens. P1. Water depth: 763673m. Feature: Gentle slope.

Highlights: Anemones Fishing net Skate, possibly Bathyraja richardsoni Sea pens & anemones Crab - Paromola cuvieri

Of note: Fishing net.

Cerianthids, the anemones Bolocera and the sea pen Kophobelemnon sp. are commonly observed in the soft sediment. Burrows, some with crabs, are also common. An unknown white coral is observed as is a box crab, Paramola cuvieri, with a sponge hat. Fish species include grenadiers and greater forkbeard. A large fishing net was observed on the seabed.

START VIDEO [00:00:00]/17:38. The entire dive is set on gentle/moderate muddy slope with dominant burrowing anemones and occasional sea pens. [1] [00:01:00] ROV stops for sampling 2 pushcores. [00:04:00] Here video is obscured/mud cloud. The visibility throughout the dive is poor/murky. [00:17:00] Here large fishing net on moderate upslope. [00:32:00] Mud cloud. For the rest of the dive, the transect is homogeneous with dominant burrowing anemones on muddy slope END VIDEO [01:33:00]/19:07.

Progression Start Duration Code Name
1[00:00:00]01:32:57M.AtMB.Mu.SpnMegSea pens and burrowing megafauna on Atlantic mid bathyal mud

Porifera
Porifera encrusting sp. 1 (white) : 1 : R
Cnidaria
Cerianthidae sp. 1 : 2 : R
Pachycerianthus multiplicatus : 458 : C
Actiniaria sp. 18 : 582 : R
Actiniidae sp. (sand Bolocera) : 41 : C
Actinauge richardi : 499 : R
Epizoanthus sp. 1 (Paguridae associated) : 317 : R
cf. Clavulariidae sp. : 289 : R
Kophobelemnon stelliferum : 442 : F
Arthropoda
Chaceon affinis : 254 : O
Paromola cuvieri : 304 : R
Paguridae sp. : 205 : R

Caridea (indet.) : 1077 : R
Bathynectes sp. : 235 : R
Mollusca
Graneledone sp. 1 : 937 : R
Opisthoteuthis extensa : 918 : R
Teuthida sp. 1 : 1017 : R
Hypsogastropoda sp. : 621 : R
Echinodermata
Pseudarchaster sp. 1 : 433 : R
Echinus sp. : 445 : R
Hygrosoma sp. : 1125 : R
Phormosoma placenta : 555 : O
Chordata
Galeus melastomus : 1005 : R
Rajiformes (indet.) : 1159 : R

Synaphobranchus kaupii : 440 : R
Merlangius melangus : 1019 : R
Nezumia aequalis : 1003 : R
Trachyrincus sp. : 446 : R
Lepidion eques : 249 : R
Mora moro : 349 : R
Phycis blennoides : 1020 : R
Lophius piscatorius : 273 : R
Epigonus telescopus : 1018 : R
Zoarcidae sp. 1 : 259 : R
Helicolenus dactylopterus : 227 : R

Number of species = 35

© Marine Institute, MERC Consultants, Bernard Picton 2022