NA153_H1992_(10of10)_20230814T201854Z.mp4
Channel: Nautilus Live Dive Recordings
Date: 06/12/2023

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 be incomplete, 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.

00:00:34 - 20230814T201929Z Note:  Coral beds in view
00:00:48 - 20230814T201943Z Note:  Pillow flows in view
00:02:25 - 20230814T202120Z Note:  Transiting downslope to WP6 (100m away)
00:03:31 - 20230814T202226Z Note:  Shrimp
00:03:51 - 20230814T202246Z Note:  Piles of pillow basalt, corals growing
00:06:42 - 20230814T202537Z Note:  Anemones (Actinostolidae or Hormathiidae) present, Euplectellidae sponge
00:07:19 - 20230814T202613Z Note:  Brittle star, crinoid associates
00:09:13 - 20230814T202808Z Note:  Fish - 30-35 cm
00:12:00 - 20230814T203054Z Note:  Chrysogorgiidae - Metallogorgia melanotrichos - light pink, long stalked, delicate cloudlike branching on top
00:13:02 - 20230814T203157Z Note:  (Proisocrinus) Proisocrinus ruberrimus - red stalked crinoids
00:14:06 - 20230814T203301Z Note:  Translucent_anemone?
00:15:57 - 20230814T203451Z Note:  Victorgoria, hemicorallium, bamboo
00:17:09 - 20230814T203604Z Note:  Victorgorgia cf. alba zoom prior, black coral zoom now
00:17:19 - 20230814T203613Z Dive Status: offbottom
00:18:19 - 20230814T203714Z Dive Status: offbottom
00:18:42 - 20230814T203737Z Note:  Bathypatrhes pseudoalternata - last large coral
00:25:53 - 20230814T204448Z Note:  8-12 SHIFT END SUMMARY: Transited towards WP5 (700m away): N side of seamount rock features were more botryodal. S side seems fresher - perhaps sheet flows fell away or mass wasted away (potential for better rock samples). Long linear fractures in rock indicative of mass wasting events (substrate falling off exposing fresher rock) as we move to the S. Observed disperse biology: Bathepathes, primnoids, yellow zoanthids colonizing a branching bamboo, single-stalked bamboo, Hemicorallium, bugle shaped glass sponges Ripples in the sediment present - indicative of strong current. Absense of nuggets or nodules, even in areas where we expect to find them. Basalt rubble present towards Crinoids maybe indicative of current. So is the lack of sediment. Fan shaped corals growing perpendicular to the flow to maximize feeding potential. Towards WP5, biology became more congragated: coral gardens primarily, sponges interspered, halosaurs. Aldrovandia sp. Grenadier fish - Coomba sp. Collected sample Sediment appeared to be steadily increasing. Approached expansive bed of sediment with ripples. Thin sediment (1-1.5 inches). Came across rich coral beds near WP5. Collected sample -068 (sea pen) at WP5. Tripod fish, cusk eels, Aspidodiadema sp. the long spine deep-sea urchin. Colllected -069 (black coral on small rock) sampled on expansive sediment). Heavily sedimented area turned into Piles of pillow basalt.
01:03:54 - 20230814T212249Z Note:  Fish went by
01:09:11 - 20230814T212806Z Note:  Oxygen minimum 20 umol/L at around 500 m depth
01:09:43 - 20230814T212838Z Note:  478 m depth - O2 minimum
01:14:26 - 20230814T213321Z Note:  Possible_ctenophore