Marine Institute
SeaRover Dive Video

D667 Transect 16 The entire dive presents an uniform species distribution and associated biotope throughout: mainly rippled mud on gentle/moderate slope with abundant Cidaris cidaris aggregations. P2. Water depth: 714m. Feature: SAC, Slope

Highlights: fishing net - ghost fishing

The seafloor consists of sand ripples, occasional depressions and some small boulders. The echinoid Cidaris cidaris is commonly seen along with gastropods and hermit crabs. Fish species include grenadiers, Lepidion eques and eels. A fishing net is observed.

START VIDEO [00:00:00]/22:20. The entire dive presents a uniform species distribution and associated biotope throughout:mainly rippled mud on gentle/moderate slope with abundant Cidaris cidaris aggregations. [1] ROV stops for sampling two pushcores. The dive starts on gentle/moderate rippled sandy slope with echinoderms as dominant species phylum. [00:10:00] Here, population of very small Paguridae recorded co-dominating with C. cidaris. [00:38:00] Fishing net. [00:52:00] Here, fields of C. cidaris aggregations on rippled sand slope. [00:58:00] C. cidaris are now less frequent. END VIDEO [01:19:00]/23:35.

Progression Start Duration Code Name
1[00:00:00]01:19:17M.AtMB.Mu.UrcComUrchin dominated community on Atlantic mid bathyal mud

Cnidaria
Cerianthidae sp. 1 : 2 : R
Arthropoda
Paguridae sp. : 205 : R
Caridea (indet.) : 1077 : R
Decapoda sp. 3 : 543 : R
Munnopsidae sp. : 1102 : R
Mollusca
Hypsogastropoda sp. : 621 : R
Echinodermata
Pseudarchaster sp. 1 : 433 : R

Echinus sp. : 445 : R
Cidaris cidaris : 211 : C
Chordata
Chimaera monstrosa : 265 : R
Synaphobranchus kaupii : 440 : R
Merlangius melangus : 1019 : R
Molva molva : 654 : R
Nezumia aequalis : 1003 : R
Trachyrincus sp. : 446 : R
Lepidion eques : 249 : R
Phycis blennoides : 1020 : R

Polyacanthonotus rissoanus : 552 : R
Trichiuridae sp. : 1303 : R
Helicolenus dactylopterus : 227 : R
Actinopterygii sp. 3 : 930 : R

Number of species = 21

© Marine Institute, MERC Consultants, Bernard Picton 2022