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| About | Mapping | Dive list | Listed species | Pressures | Species - OTUs |
D458 Transect 43 Mainly cobbles/boulders frequent corals, Solenosmilia variabilis reef. Features of Interest: canyon, escarpments Water Depth: 1986-1672 m
Highlights: Brisingids on boulder Sea fan? Anemone & stalked crinoids Solenosmilia reef
The substrate on the canyon floor is comprised of cobbles and pebbles with areas of coarse sand. The side of the canyon is initially steep bedrock leading to terraces of cliff interspersed with steep inclines of soft sediment; terracing starts at around 1930 m. On the lower reaches of the canyon wall stalked crinoids and encrusting sponge are common. The coral Solenosmilia variabilis is present towards the top of the canyon; it is interspersed with glass sponges at the top and on the surrounding seafloor. Terraces at 1930 m and 1819 m are characterised by interesting fossilised barnacle plates.
| Progression | Start | Duration | Code | Name |
|---|---|---|---|---|
| 1 | [00:00:00] | 01:50:43 | M.AtLB.Ro.MixCor | Mixed cold water coral community on Atlantic lower bathyal coarse sediment |
| 2 | [00:00:00] | 01:58:49 | M.AtLB.Ro.MixCor | Mixed cold water coral community on Atlantic lower bathyal coarse sediment |
| 3 | [00:05:16] | 00:01:32 | M.AtLB.Ro.MixCor | Mixed cold water coral community on Atlantic lower bathyal coarse sediment |
| 4 | [00:06:49] | 00:07:24 | M.AtLB.Ro.MixCor | Mixed cold water coral community on Atlantic lower bathyal coarse sediment |
| 5 | [00:14:14] | 00:02:45 | M.AtLB.Bi.CorRee.SolVar | Atlantic lower bathyal live Solenosmilia variabilis reef (biogenic structure) |
| 6 | [00:17:00] | 00:01:29 | M.AtLB.Ro.MixCor | Mixed cold water coral community on Atlantic lower bathyal coarse sediment |
| 7 | [00:18:30] | 00:01:41 | M.AtLB.Bi.CorRee.SolVar | Atlantic lower bathyal live Solenosmilia variabilis reef (biogenic structure) |
| 8 | [00:20:12] | 00:01:03 | M.AtLB.Ro.MixCor | Mixed cold water coral community on Atlantic lower bathyal coarse sediment |
| 9 | [00:21:16] | 00:01:53 | M.AtLB.Bi.CorRee.SolVar | Atlantic lower bathyal live Solenosmilia variabilis reef (biogenic structure) |
| 10 | [00:23:10] | 00:03:33 | M.AtLB.Ro.MixCor | Mixed cold water coral community on Atlantic lower bathyal coarse sediment |
| 11 | [00:26:44] | 00:23:43 | M.AtLB.Bi.CorRee.SolVar | Atlantic lower bathyal live Solenosmilia variabilis reef (biogenic structure) |
Porifera
Asconema sp. : 1038 : O
cf. Polymastia boletiformis : 1030 : O
Geodia cf. atlantica (Porifera massive lobose sp. 6) : 83 : O
cf. Geodia baretti (Porifera massive globose sp. 11) : 601 : O
Porifera encrusting sp. 1 (white) : 1 : R
Porifera encrusting sp. 10 (yellow) : 30 : O
Porifera lamellate sp. 10 : 1010 : F
Porifera lamellate sp. 13 : 1053 : O
Porifera lamellate sp. 9 : 606 : O
Porifera massive globose sp. 13 : 648 : O
Porifera massive globose sp. 15 (Solenosmilia rubble) : 1051 : F
Porifera massive lobose sp. 21 (Hertwigia sp. ?) : 611 : O
Blue Porifera encrusting : 800 : R
Cnidaria
Actiniaria sp. 1 : 4 : R
Actiniaria sp. 18 : 582 : R
Actiniaria sp. 20 : 605 : R
Actiniaria sp. 27 : 976 : R
Actinernus michaelsarsi : 554 : R
Actinoscyphiidae sp. 1 (pink) : 1047 : O
Actinostolidae sp. 1 : 132 : O
Phelliactis sp. 1 : 255 : O
Liponema sp. : 1055 : R
Antipatharia sp. 4 cf. Stauropathes : 592 : F
Stichopathes sp. : 560 : F
Chrysopathes sp. Trissopathes sp. : 540 : F
Leiopathes sp. : 305 : F
Bathypathes sp. (brown) : 284 : F
Stauropathes arctica : 547 : O
Telopathes sp. : 1043 : R
Caryophyllia sp. 2 : 6 : O
Solenosmilia variabilis : 700 : C
Anthomastus grandiflorus : 278 : O
Anthothela grandiflora : 311 : R
Chrysogorgidae sp. 1 : 1008 : O
cf. Clavulariidae sp. : 289 : R
Eknomisis sp. : 649 : O
Keratoisis sp. 2 : 578 : O
Lepidisis sp. : 557 : O
Isididae sp. (white sparse branching) : 1037 : O
Paramuricea sp. : 1050 : O
Gorgonacea sp. 7 (pink) cf. Isidella : 307 : O
Anthoptilum grandiflorum : 594 : O
Pennatula aculeata : 1046 : O
Annelida
Serpulidae sp. 1 : 106 : O
Arthropoda
Chirostylidae sp. 2 (indet.) : 1054 : R
Munida tenuimana : 339 : R
Paguridae sp. : 205 : R
Bryozoa
Reteporella sp. : 204 : O
Echinodermata
Bathycrinidae sp. 1 : 1041 : F
Bathycrinidae sp. 2 cf. Porphyrocrinus thalassae : 1045 : R
Koehlermetra porrecta : 315 : O
Anachalypsicrinus nefertiti : 1031 : F
Crinoidea sp. 1 : 131 : F
Asteronyx loveni : 471 : R
Ophiomusa lymani : 551 : F
Ophiuroidea sp. 11 (red disc) : 1036 : F
Brisingidae sp. : 274 : F
Stichastrella rosea : 198 : R
Porania sp. : 263 : O
Solaster endeca : 573 : O
Echinus sp. (deep, white/pink) : 1052 : O
Echinoidea sp. 5 : 572 : R
cf. Psolus sp. : 1049 : R
cf. Amperima sp. : 628 : R
Benthogone sp. : 432 : F
Chordata
Ascidiacea sp. 2 : 20 : R
Apristurus cf. microps : 568 : O
Hydrolagus cf. affinis : 1039 : O
Synaphobranchus kaupii : 440 : O
Coryphaenoides guentheri : 577 : O
Coryphaenoides rupestris : 566 : O
Mora moro : 349 : R
Notacanthiformes (indet.) : 1034 : O
Neocyttus helgae : 563 : O
Actinopterygii sp. 3 : 930 : R
Number of species = 75
© Marine Institute, MERC Consultants, Bernard Picton 2022