D570 Transect PB29 Gentle slope with mud/pebble/boulders hosting sparse epifauna including anemones. Fish Micromesistius poutassou is particularly abundant. Priority 1. Features: Mounds, NPWS selected. Water depth: -330 m. TL: 8 km SOL: 14° 29.559' W 51° 59.936' N
Highlights: Anemone - Phelliactis Spectacular shoal of blue whiting Blue whiting & Phelliactis anemone
An upslope of muddy sediment with occasional cobbles and boulder. Large boulders host the anemone Phelliactis sp., the asteroid Porania pulvillus and the holothurian Parastichopus tremulus. A large shoal of Blue whiting is encounter towards the end of the dive.
START VIDEO [00:00:00]/06:14. Mud cloud/vision obscured throughout the whole transect. Muddy gentle upslope. [00:04:00] Occasional pebbles/cobbles/boulders with sparse epifauna. [00:05:00] Now large boulder/bedrock showing one side of the rock with many anemones (poss Pachycerianthus multiplicatus). Here dead coral structure at the bottom of the bedrock. [00:06:00] Fish Micromesistius poutassou OTU439 spotted frequently. [00:06:00] Cobbles/boulder fields. Sparse epifauna, mainly P. multiplicatus. [00:11:00] Here down slope dominated by bedrock and mud sediment with sparse epifauna. [00:17:00] Mud cloud/vision obscured. [00:19:00] ROV stops to sample two pushcores. [00:26:00] Now gentle/moderate upslope. Predominantly muddy sediment. [00:30:00] A shoal of M. poutassou swimming near the bottom. Still mud upslope. [00:59:00] Mud cloud/vision obscured. [01:08:00] Vision back to normal. [01:13:00] cobble/boulder fields. [01:16:00] Now muddy again. M. poutassou are still abundant. [01:21:00] Mud interspersed with pebble/cobble fields. [01:36:00] Massive aggregation of coral structure. [01:39:00] Cobble/boulder host Phelliactis sp. OTU255. [01:42:00] A shoal of M. poutassou still present. VIDEO ENDS AT [01:42:48]/07:57.
Progression | Start | Duration | Code | Name |
---|---|---|---|---|
1 | [00:00:00] | 00:04:25 | M.AtUB.Mu | Atlantic upper bathyal mud |
2 | [00:04:26] | 00:08:06 | M.AtUB.Mu | Atlantic upper bathyal mud |
3 | [00:12:33] | 00:04:14 | M.AtUB.Mu | Atlantic upper bathyal mud |
5 | [00:29:16] | 00:02:51 | M.AtUB.Mu | Atlantic upper bathyal mud |
6 | [00:32:08] | 00:02:54 | M.AtUB.Ro.MixCor | Mixed cold water coral community on Atlantic upper bathyal rock and other hard substrata |
7 | [00:35:03] | 00:02:30 | M.AtUB.Ro | Atlantic upper bathyal rock and other hard substrata |
8 | [00:37:34] | 00:02:00 | M.AtUB.Ro | Atlantic upper bathyal rock and other hard substrata |
9 | [00:39:35] | 00:37:24 | M.AtUB.Mu | Atlantic upper bathyal mud |
10 | [01:17:00] | 00:01:00 | M.AtUB.Bi.CorRee | Atlantic upper bathyal cold water coral reef (biogenic structure) |
11 | [01:18:01] | 00:02:15 | M.AtUB.Mu | Atlantic upper bathyal mud |
12 | [01:20:17] | 00:04:05 | M.AtUB.Ro | Atlantic upper bathyal rock and other hard substrata |
13 | [01:24:23] | 00:03:22 | M.AtUB.Mu | Atlantic upper bathyal mud |
14 | [01:27:46] | 00:06:14 | M.AtUB.Ro | Atlantic upper bathyal rock and other hard substrata |
15 | [01:34:01] | 00:17:34 | M.AtUB.Mu | Atlantic upper bathyal mud |
Porifera
Pheronema carpenteri : 347 : R
Cnidaria
Pachycerianthus multiplicatus : 458 : R
Actinernus michaelsarsi : 554 : R
Bolocera tuediae : 12 : R
Phelliactis sp. 1 : 255 : F
Caryophyllia sp. 2 : 6 : R
Lophelia pertusa : 250 : R
Kophobelemnon stelliferum : 442 : R
Protoptilum sp. : 434 : R
Annelida
© Marine Institute, MERC Consultants, Bernard Picton 2022