NA149_H1952_(4of6)_20230524_050953Z
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 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.

0:00:18 - Note: decorator crab with sponge
0:04:20 - Note: gold coral kulamanamana?
0:09:17 - Note: primnoid with squat lobster
0:11:46 - Note: large iridogorgia with squat lobster and benthic ctenophores
0:15:48 - Note: possible radiolarian in atalanta's camera
0:18:07 - Note: fish
0:18:57 - Note: heading across mostly rocky substrate ~180 degrees at ~1200 m, similar biology
0:24:30 - Note: cutthroat
0:28:32 - Note: reduced bio, currently over rocky substrate, heading ~330 degrees at ~1220 m
0:33:17 - Note: paused to test for loose rocks
0:33:39 - Note: hydroid
0:36:30 - Note: corillamorphidae
0:39:58 - Note: adjusting heading, drifted about 20 m south of station
0:41:25 - Note: back into position
0:41:44 - Note: holding position for shift change
0:51:28 - Note: heading towards WP2, heading down the slope
0:54:27 - Note: substrate mainly sand flat bottom
0:58:41 - Note: possible downslope moved rock formation?
0:58:55 - Note: possible sea pen from far
0:59:15 - Note: correction: Ferradae sponge
1:03:40 - Note: correction from previous WP direction: going towards WP 3
1:04:07 - Note: sea pen sighting
1:06:35 - Note: Primnoid sighting
1:07:02 - Note: Iridigorgia mangaspiralis sighting
1:07:13 - Note: magnaspiralis*
1:07:41 - Note: Nurella? sighting
1:09:26 - Note: chrysogorgia  with "venus flytrap" anemone
1:11:10 - Note: id correction for previous coral: chrysogorgia geniculata
1:13:28 - Note: fish sighting
1:14:51 - Note: continuing transit, flat terrain with fine sandy substrate with small pebbles sparsely distributed among sand ripples
1:20:26 - Note: Echinoderm sighting
1:21:33 - Note: Echinothurioida sperosoma sp. (id correction)
1:26:18 - Note: pebbles of manganese rocks
1:30:40 - Sample: pebble ~ 1-2cm of manganese rocks, dark grey/black (Sample ID: NA149-037) (Sample Type: Scoop)
1:34:13 - Note: continuing transit towards WP 3
1:34:33 - Note: DC ground fault on Herc
1:36:15 - Note: feeding tracks on sediment observation
1:42:07 - Note: Closing up to WP 3, starting to go upwards the seamount slope
1:42:35 - Note: substrate now composed of multiple encrusted medium/small rocks in sand
1:43:40 - Note: Passing WP 3
1:45:13 - Note: substrate along the slope mainly boulders encrusted in what appears to be fine sand
1:46:03 - Note: boulder with coastal erosion features
1:48:12 - Note: Euplactella? sighting from far
1:48:46 - Note: id correction: Euplectellidae sponge
1:49:08 - Note: anemone sighting
1:50:10 - Note: Ferradae sponge
1:51:13 - Note: correction: Narella sighting]
1:51:24 - Note: Plexaurid righting a minute ago
1:52:00 - Note: Another Narella sighting
1:52:10 - Note: Iridigorgia magnaspiralis from far
1:52:22 - Note: Anothert Narella sighting
1:54:12 - Note: Possible primnoid or bamboo sighting
1:54:44 - Note: Plexaurid sighting
1:54:59 - Note: Two venus fly trap anemones'
1:55:20 - Note: Confirming previous coral id: internodal bamboo sighting
1:56:06 - Note: chrysogorgia from far
1:57:53 - Note: Isididae keratoisidinae (previous bamboo coral id)
1:58:04 - Note: black coral sighting
1:58:09 - Note: corallivory sighting
1:59:05 - Note: Black coral has multiple associates: two brittle stars, one venus fly trap anemone