Marine Institute
SeaRover Dive Video

D691 Transect 8 Uniform biotope from start to end. Dominant holothurian aggregations on muddy/soft sediment slope. P1. Water depth: 1292m. Feature: Ridge

Highlights: Sea cucumber Sea cucumber

Of Note: Very small, possibly juvenile chimerids..

The sediment is soft with burrows (some with galatheids). Fauna is sparse and includes cup corals, cerianthids, asteroids crinoids, sea pens and a variety of holothurian species. An expected Pheronema aggregation, nor any individual sponges are observed.

START VIDEO [00:00:00]/06:35. Uniform biotope from start to end. Dominant holothurian aggregations on muddy/soft sediment slope. [1] Biotope is predominantly holothurians and Zoroaster fulgens on muddy slope. ROV stops for two pushcores. END VIDEO [01:03:00]/07:33.

Progression Start Duration Code Name

Cnidaria
Cerianthidae sp. 1 : 2 : R
Actiniaria sp. 20 : 605 : R
Phelliactis sp. 1 : 255 : R
Pennatulacea sp. 3 (submerged axis) : 1191 : R
Kophobelemnon stelliferum : 442 : R
Arthropoda
Munida tenuimana : 339 : R
Caridea (indet.) : 1077 : R
Mollusca
Muusoctopus johnsonianus : 1194 : R
Echinodermata

Crinoidea sp. 1 : 131 : R
Brisingidae sp. : 274 : R
Zoroaster fulgens : 988 : R
Porania sp. : 263 : R
Cidaris cidaris : 211 : R
Phormosoma placenta : 555 : R
Mesothuria intestinalis : 536 : R
Holothuroidea sp. (pink deep) : 1179 : R
Chordata
Hydrolagus cf. mirabilis : 1024 : R
Synaphobranchus kaupii : 440 : R
Ipnopidae sp. : 1078 : R

Hoplostethus atlantica : 651 : R
Coryphaenoides rupestris : 566 : R
Trachyrincus sp. : 446 : R
Polyacanthonotus rissoanus : 552 : R
Zoarcidae sp. 1 : 259 : R

Number of species = 24

© Marine Institute, MERC Consultants, Bernard Picton 2022