NA149_H1950_(3of14)_20230521_013252Z
Channel: Nautilus Live Dive Recordings
Date: 20/07/2023

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 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.

0:00:12 - Note: going another 20m at 035 degrees at 0.2 knots
0:01:25 - Note: attempting to collect angular rock 
0:02:50 - Sample: angular black rock, ~20x10 x10cm with possible ferromanganese crust (Sample ID: NA149-011) (Sample Type: ROVGrab)
0:07:55 - Note: stopping ship holding postition
0:08:45 - Note: vehicles are trying to reorient due to us in blue waters
0:09:33 - Note: staring ship again 
0:12:27 - Note: another 20m at 035 degrees 0.2kts
0:15:53 - Note: moving up western direction at 270 degrees; both ship and rov
0:16:26 - Note: going 20m at 270 degrees and 0.2 kts
0:27:41 - Note: Watch change just finished
0:32:02 - Note: traveling to next waypoint over sandy substrate
0:34:08 - Note: AC ground fault detected
0:35:59 - Note: Ground fault cleared
0:36:20 - Note: Ground fault was in Atalanta
0:39:02 - Note: Passing over a boulder field
0:44:08 - Note: Rocky substrate with several stalked crinoids
0:45:26 - Note: Stalked crinoids
0:47:45 - Note: xenophiophore, crinoid
0:48:42 - Note: xenophiophore
0:50:56 - Note: Chrysogorgid?
0:53:14 - Note: Still over rocky substrate with sandy patches and occasional crinoids
0:56:51 - Note: Still over rocky substrate with sandy  patches and occasional crinoids
0:59:48 - Note: Glass sponge
1:01:19 - Note: Still over rocky substrate with sandy patches
1:01:56 - Note:  purple Holothurian
1:02:41 - Note: Holothurian ~25 cm
1:06:04 - Note: Heading ~250 degrees over rocky substrate
1:06:17 - Note: brittle star
1:07:33 - Note: bamboo coral ~15 cm
1:08:46 - Note: still occasional crinoids over mostly rocky substrate
1:09:40 - Note: Cusk eel?
1:14:46 - Note: Still over mostly rocky substrate with occasional sandy patches
1:18:15 - Note: Moving over to more fine sandy substrate
1:19:10 - Note: Bamboo coral ~ 30 cm
1:20:18 - Note: turning to north, over a boulder field
1:25:16 - Note: bamboo coral ~40 cm
1:26:01 - Note: bottlebrush chrysogorgia with brittle star
1:26:22 - Note: small sponge
1:26:46 - Note: barnacles
1:27:23 - Note: bamboo coral ~30 cm
1:28:33 - Note: holding position
1:29:25 - Note: bamboo coral ~30 cm
1:29:50 - Note: polychaete
1:30:08 - Note: glass sponge
1:35:11 - Note: repositioning ship for sample collection
1:38:32 - Note: large sponge
1:40:53 - Note: Chrysogorgiid coral
1:49:02 - Sample: ~10 cm Chrysogorgiid cutting, original specimen with yellow base, attached to hard substrate (Sample ID: NA149-012) (Sample Type: ROVGrab)
1:53:10 - Sample: Background eDNA sample, region with very low biodiversity, only one Chrysogorgiid seen in the area, sample taken close to boulder embedded hard substrate (Sample ID: NA149-013) (Sample Type: Niskin)
1:55:40 - Note: moving up the guyot over rocky substrate, occasional crinoids
1:58:56 - Note: bamboo coral