Highlights: 00:28:00 Solenosmilia reef 00:37:00 Bolocera sea anemone 01:10:52 Holothurian & sea fan 01:16:51 Orange roughy 01:45:00 Sea fan & brittlestar

The floor of the canyon slopes gently upwards from 1870 m; terraces are present from 1700 m to the top of the canyon at 1400 m. The ground is generally soft interspersed with hard cliffs. Where hard substrate is present black corals, including Leiopathes sp., glass sponges and cup corals are numerous; crinoids and ophiuroids are also present here. Numerous brisingids are present and a large anemone, cf. Bolocera sp. At 1650 m a Solenosmilia variabilis reef is evident. Barnacles are common along here with what appears to be sabellid tubes. At the top of the canyon rocks and boulders are colonised by barnacles, glass sponges and black corals. Marine litter (plastic water cup) is recorded here.

START VIDEO [00:00:00]/00:20 [1]: The transect starts on rippled sand with no obvious dominant epifauna. [00:06:06] Antimora sp. [00:07:00] [2] Areas of sparsely encrusted carbonate crust become apparent under the sand, and Ophiomusa lymani ophiurioids are frequently encountered. [00:12:00] [3] the rippled sand, now with occasional pebbles starts to host a field of solitary cup corals [00:16:00] [4] the transect bisects a small bedrock shelf/escarpment with mixed corals [00:16:00]/00:37 [5] then continues into more cup corals on rippled sand, now with increasing densities of xenophyophores (Syringammina fragilissima). [00:25:00] [6] A large bedrock outcropping is encountered with rich encrusting fauna and Solenomilia variabilis colonies. From here several further bedrock shelves are met, hosting similar fauna, with cup corals and xenophyophores on the terraces between them. [00:42:00] [7] While similar features are encountered, the hard substrate starts to be dominated by barnacles, although mixed corals still co-occur. Cup coral/xenophyophore terraces continue. [00:45:00] [8] A more substantial escarpment is met and traversed along. The hard substrate here displays both mixed corals and Solenosmilia variabilis and dense barnacles (thought of as separate biotopes in the mid-bathyal). [00:50:00] [9] a longer period is spent over rippled sand and the cup coral/xenophyophore aggregations. [00:59:00] [10] further terraces of bedrock are encountered, here with S. variabilis dominating the vertical shelves and the cup corals/xenophyophores on rippled sand/pebbles between. [01:13:00] [11] above the top terrace, the cup corals/xenophyophores continue with rare boulders displaying mixed corals (e.g. Paramuricea sp. and Chrysogorgiidae sp). One Orange Roughy (Hoplostethus atlanticus) is encountered. Increasing pebbles lead to [01:27:00] [12] areas of cobbles/boulders encrusted predominantly by barnacles although mixed corals are also present. These increase in density until reaching the foot of a steeper slope at [01:43:00] [13] here the soft sediment is a veneer over carbonate rock and is dominated by Stichopathes sp. corals, exposed rock, boulders and cobbles display more mixed corals including discrete Solenosmilia variabilis colonies. [01:55:00] [14] The top of the slope is reached, resuming rippled sand now with dense xenophyophores and rare boulders dominated by barnacles. END VIDEO [02:02:00]/02:23.