NA149_H1956_(3of8)_20230528_232038Z
Channel: Nautilus Live Dive Recordings
Date: 2023-07-20

This playlist includes recordings of all ROV Hercules dives conducted during a single Ocean Exploration Trust expedition aboard E/V Nautilus. Each dive is divided into two-hour segments. File names include:

Cruise ID_Dive Number_ File(XofX) _Date[yyyy-mm-dd]_Time[hhmmss]z

All files are recorded in UTC-0, the same way they are recorded by ROV Hercules' primary imaging camera.

The chapter observations presented were recorded in the data log in real-time by the scientists and data loggers aboard the ship. These are preliminary observations only. Data has not been QA/QCed or otherwise verified, and may contain inaccuracies, identification and spelling errors.

Scientific/research requests for the full video or for sub-sets of video can be made at https://nautiluslive.org/join/scientists-ashore-program. Please note that the YouTube videos may be incomplete and are not the full-resolution video. For press inquiries or licensing requests for reuse, please contact press@oet.org.

0:05:32 - Note: unknown work but urchin beside it 
0:09:03 - Note: ophiidid and possible acanthephyra shrimp
0:14:47 - Note: coming up rocky slope wall 
0:16:01 - Note: layered rocky slope
0:18:31 - Note: current coming from north direction 
0:20:23 - Note: moving along the wall of slope 
0:21:21 - Note: looking for a good rock sample 
0:25:55 - Note: rock was real crusted that it crumbled 
0:26:51 - Note: altered sediment with low crust around it 
0:27:25 - Sample: angular small rock about 10 to 15 cm  (Sample ID: NA149-074) (Sample Type: ROVGrab)
0:35:37 - Note: moving up slope towards wp3 
0:38:45 - Note: so far in dive: started off over sandy sediment at base of canyon edge slope. No bio in sand except a few umbelulla, ophidiids, and macrourids. Moved toward and up steep rock face, still seeing no bio except a few actinostolids and at one point encountering strong northerly current. Had to readjust ship position, then contoured lower on slope again between WP2 and 3 before starting up slope toward WP3 again. Still saw essentially no bio.  
0:39:02 - Note: Currently approaching steepest section of slope between WP 2 and 3
0:42:31 - Note: starting to see a little bit of bio such as coral, sponge and dead stalked 
0:45:17 - Note: chrsyogorgia and possible bolosoma or eupletectellidae 
0:46:09 - Note: correction, euplectellid earlier may have been unstalked bolosoma
0:48:32 - Note: primnoidae? with brittle star associate 
0:52:26 - Note: noting more biodiversity 
0:55:02 - Note: considering coral sample 
0:59:00 - Note: seeing regadrella sponges and some more unstalked hyalonema/bolosoma sponges possibly
0:59:35 - Note: heteropolypus
0:59:43 - Note: possible dead cup corals
1:00:50 - Note: pleurogorgia militaris is dominant, seems concentrated under overhangs
1:03:20 - Note: chrysogorgia geniculata
1:03:40 - Note: Sponge ID rosselidae
1:07:41 - Sample: eDNA sample very high density of chrysogorgia geniculata, primnoids, farreid, sponge such as bolosoma, and rosselidae  (Sample ID: NA149-075) (Sample Type: Niskin)
1:11:58 - Note: bamboo coral
1:14:24 - Note: attempting coral sample 
1:20:07 - Note: sample failed would not go into slurp 
1:21:54 - Note: correction, all has bee ramulagorgia militaris
1:24:32 - Note: Have been over steep rock wall with mainly fairly dense concentrations of ramulagorgia militaris on overhanging faces, some chrysogorgia geniculata, a few primnoid fans, and some unstalked bamboo corals. 
1:27:22 - Note: euplectellidae 
1:28:35 - Note: rossellidae 
1:30:40 - Note: actually maybe strange euplectellid sponge
1:32:50 - Note: looking for a good rock sample 
1:34:46 - Sample: possible medium size rock about 15cm encrusted top with orange brownish bottom  (Sample ID: NA149-076) (Sample Type: ROVGrab)
1:41:43 - Note: trying to get sample out of slurp tube 
1:45:59 - Sample: Ramuligorgia militaris a little less than 10 cm possible sample in slurp  (Sample ID: NA149-077) (Sample Type: ROVGrab)
1:53:02 - Note: possibly amphidiscella stalked sponge