Highlights: 00:15:08 Hexactinellid sponge - Aphrocallistes 00:26:12 Large yellow sponge & stylasterid coral 00:27:30 Hexactinellid sponge - Euplectella 00:36:40 Stylaster sp 1 00:37:49 Stylasterid coral 00:53:19 Pheronema carpenteri 00:59:34 Molva macrophthalma 01:07:40 Gorgonocephalus sp. 1

Mixed substrate with some biogenic sponge components, pebbles, cobbles and boulders.

Many sponges are evident, especially Aphrocallistes beatrix and Geodia sp. along with mixed lamellate and encrusting forms. Transition to sponge reef with Aphrocallistes beatrix as main framework. Fauna include the gorgonians, Leiopathes sp. and Koehlermetra sp. Transition to Lophelia/Madrepora reef (~25% living) with few or no A. beatrix present and occasional gorgonians (Leiopathes sp. and Koehlermetra sp.).

START VIDEO [00:00:00]/07:20 [1] Barnacle gravel/gravel/ coral gravel /pebbles/cobbles with frequent encounters of Aphrocallistes sp. and hydrozoans on uphill. [00:01:00]-[00:03:00] ROV samples 1 pushcore. [00:06:00] – [00:08:00] ROV stops for imagery. Encrusted and glass sponges on boulders. [00:26:00]-[00:29:00] ROV stops for imagery of Demospongiae (possibly OTU657) and Stylaster sp.1 on boulder. [00:34:00] [2] Now not cobbles/pebbles, predominantly covered in coral rubble/coral gravel/gravel/sparse boulders with many associated epifauna. Main dominant species include Stylaster sp.1 and Aphrocallistes sp. [00:41:00] [3] Now cobbles and pebbles fields again, as well as coral rubble/coral gravel/boulders. In this part of the transect, dead sponge/sponge framework is a new substrata to record and host many associated species. Aphrocallistes sp. and Demospongiae (yellow encrusted sponge) form dense aggregations. [00:44:00] Bedrock exposed. [00:59:00] [4] Here Lophelia pertusa/Madrepora oculata reef, with dominant Aphrocallistes sp., Koehlermetra porrecta, Leiopathes sp. and Acanella arbuscula (firtree) on gentle uphill. Mosaic sediment at times, which is formed by gravel/sand and coral reef framework. Dominant K. porrecta is recorded at times. [01:10:00]-[01:11:00] ROV stops for imagery of Lophelia pertusa framework with Acanella arbuscula. [01:40:00] ROV stops for imagery and sampling of L. pertusa reef until [01:52:00], END VIDEO 09:13.