Highlights: 00:49:31 Stalked sponges, stalked crinoids & antipatharian corals 01:39:22 Antipatharian coral & stalked crinoids 01:52:56 Stalked sponge 02:25:28 Excellent footage of Dumbo octopus - Grimpoteuthis

Terrain alternates between soft sediment with occasional drop stones to areas of rock incline with mud overlay. On the soft sediment there are some signs of bioturbation, infaunal burrows and tracks but conspicuous fauna are sparse ( occasional xenophyophore and Phenomena carpenteri). The hard rock inclines include stalked crinoids, Leiopathes sp., Bathypathes sp., Parantipathes sp., Hyalonema spp., Anachalypsicrinus nefertiti and serpulid tubes. Pillow lava seen towards the end of the dive. A bacterial mat (web-like structure) on dead cup corals was observed and sampled. Coral rubble and small pieces of living Solenosmilia are observed towards the top of the cliff. Species of note include: the oyster Acesta excavata, the whip coral Radicipes gracilis and the holothurian Psolus squamatus, ascidians, serpulid tubes, cirrate octopus, eels, chimerids.

VIDEO A STARTS AT [00:00:00]/11:23. [1] Muddy sediment/cobbles/boulders, A. nefertiti and glass sponge OTU1010 living on rock on very steep slope. [00:02:00] Fairy rings on ground. [00:03:00] [2] Very steep boulders. Stalked crinoids OTU1045 and OTU1031 co-dominate. [00:04:00] ROV descends along the ridge. [00:05:00] While the ROV descends, camera shows water column. [00:06:00] Now vision back to the seafloor. ROV moves slowly while it continues to descend. [00:16:00] Water vision again. [00:18:30] ROV at the bottom. Vision normal again. [00:23:30] Water column again. [00:26:00] Vision back to normal. [00:26:00] [3] muddy sediment with Foraminifera fields. [00:27:00] [4] here large boulders with A. nefertiti dominant. [00:27:00] water vision again while ROV moves down slope. [00:29:00] [5] Muddy sediment with sparse epifauna including Ceriantharia sp. OTU1069 and Phormosoma placenta OTU555. [00:37:00] ROV stops for imagery of Pheronema carpenteri OTU347. [00:43:00] [6] Now boulder/mud. A. nefertiti and glass sponge OTU1010 co-dominate. [00:54:00] Boulder covered in ophiuroids. [00:57:00] ROV stops for imagery of P. carpenteri. [01:13:00] water vision again. [01:14:00] vision back to the seafloor. [01:21:00] water vision again. [01:38:00] camera back to the seafloor. [01:39:00] [7] Muddy sediment/boulders. Hard substrate dominated by Leiopathes sp. and Bathypathes sp. [01:43:00] Marine snow vision again. [01:49:30] vision normal again. [8] Large boulder where A. nefertiti and glass sponges co-dominate. [01:50:00] No hard substrata from here. [9] Muddy sediment with Foraminifera. [02:01:00]-[02:07:00] ROV stops for imagery and sampling of Lollipop sponge (unknown species). [02:13:00] [10] vertical wall/bedrock with Crinoidea sp.1 and Democrinus sp. OTU1103. [02:14:00] Here striking encounter of Hydrozoa or Bacteria grown or covering over fossilized coral. VIDEO A ENDS [02:18:00]/13:41.

VIDEO B STARTS 13:43. [11] Epifaunally diverse including glass sponges OTU576, A. nefertiti and feather stars OTU131. Mosaic sediment including mud and bedrock. [02:24:00] [12] Now Leiopathes sp., A. nefertiti and crinoids co-dominate on large boulder/bedrock. [02:26:00] ROV stops for imagery of octopus. [02:34:00] Juvenile sponge aggregation (unknown species). [02:34:00] [13] Mosaic again, mud and bedrock on very steep/vertical wall. [02:37:00] ROV stops for imagery and sampling of bivalve. [02:44:00] [14] Here vertical wall, muddy sediment with abundant boulders. Leiopathes and A. nefertiti on hard substrate. [02:51:00] Now ROV climbs epifaunally diverse steep slope/vertical wall, including sponges, crinoids and soft corals. Bacterial mat on bedrock is present. [03:01:00] ROV reaches the top of the bedrock where hard substrate is covered in mud. VIDEO B ENDS [03:03:00]/14:28.

N.B. Small Polyacanthonotus rissoanus recorded by A. nefertiti field.