NA149_H1950_(5of14)_20230521_053252Z
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.

0:00:18 - Note: holothurian
0:01:37 - Note: chrysogorgiid with crinoid and anemone
0:02:23 - Note: continuing over rocky substrate heading ~270 degrees
0:02:38 - Note: sea pig
0:02:50 - Note: holothurian
0:07:39 - Note: chrysogorgia and bamboo?
0:08:26 - Note: chrysogorgia
0:09:21 - Note: Continuing over rocky substrate, heading ~300 degrees, occasional crinoids
0:09:31 - Note: chrysogorgia
0:13:15 - Note: cup coral and chrysogorgia
0:15:27 - Note: continuing over rocky substrate, occasional crinoids, heading ~250 degrees
0:18:21 - Note: local high starting to descend other side
0:18:31 - Note: bamboo coral
0:20:57 - Note: holding position for watch change
0:23:25 - Note: holothurian, sponge
0:30:12 - Note: bamboo coral observation
0:32:50 - Note: crinoid observation
0:33:51 - Note: previous coral: unbranched bamboo coral
0:35:06 - Note: substrate composed of embedded rocks with ferromanganese crust 
0:35:37 - Note: possibly Farreidae sponge
0:37:28 - Note: glass sponge
0:37:54 - Note: Holothurian observation a minute ago
0:38:55 - Note: possibly a bamboo coral
0:39:44 - Note: possibly Farreidae sponge
0:40:45 - Note: chrysogorgia  with sea cucumber and a cup coral
0:42:42 - Note: DC ground fault on Herc, just came back to normal
0:44:40 - Note: "pillow" lava formations]
0:48:03 - Note: Following now flat terrain, then upwards gentle slope
0:48:25 - Note: glass sponge
0:49:35 - Note: Crinoid
0:51:18 - Note: Sandy bottom with ripples
0:52:06 - Note: 100m left of the flat terrain before the slope
0:52:24 - Note: stopping to attempt a sediment core extraction (push core)
1:00:00 - Sample: fine sandy bottom, light cream color, with small pebbles closely evenly distributed. filled close to 80% of push core (Sample ID: NA149-016) (Sample Type: PushCore)
1:01:18 - Note: Atlanta is spinning currently
1:01:57 - Note: Difficulty positioning Atlanta with only one thruster
1:02:20 - Note: In the process of getting to more push core samples
1:03:08 - Note: correction: two more push samples
1:07:58 - Note: Second push core inserted
1:08:23 - Note: Going to insert third [push core now (sample 018)
1:09:25 - Note: third push core inserted left of second push core
1:16:54 - Note: Positioning both Herc and Atlanta to view samples and start push core extraction
1:21:30 - Note: for reference: red band cap push core is sample 017 while sample 018 has a white band cap
1:23:48 - Sample: fine sandy bottom, light cream color, with small pebbles closely evenly distributed. filled close to 60% of push core (Sample ID: NA149-017) (Sample Type: PushCore)
1:26:32 - Note: positioning Herc to pick up third push core
1:27:01 - Note: Wind is picking up, will be moving the ship soon
1:31:24 - Note: Ship cannot move much because of wind speed, causing delays in third push core extraction
1:35:57 - Note: Atlanta is also having issues to move, possibly related to its thruster
1:37:25 - Note: sea cucumber observation
1:49:37 - Note: retaking third sediment core
1:51:41 - Sample: fine sandy bottom, light cream color, with small pebbles closely evenly distributed. filled close to 75% of push core (Sample ID: NA149-018) (Sample Type: PushCore)
1:53:24 - Note: moving on to continue exploring
1:56:03 - Note: Heading towards 290