NA149_H1955_(6of9)_20230527_172613Z
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 _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.

0:01:56 - Sample: paragorgia clipping ~10-15 cm, ~40 cm pink/reddish fan with zooanthids (Sample ID: NA149-067) (Sample Type: ROVGrab)
0:05:59 - Note: dc ground fault detected on herc
0:08:53 - Note: holding position to sort out issue with tether
0:09:12 - Note: ground fault corrected
0:10:59 - Note: ~80 m south of wp6
0:17:15 - Note: resuming route up slope heading ~50 degrees at ~1930 m 
0:17:33 - Note: calophacus glass sponge
0:18:36 - Note: similar diversity and abundance, predominantly paragorgia and chrysogorgia corals over rocky substrate
0:20:21 - Note: paragorgia and sponge with yellow crinoid
0:21:41 - Note: dead? sponge with brittle star, crinoid, squat lobster, tunicate?
0:23:26 - Note: paragorgia, bamboo coral, white morph paragorgia
0:23:54 - Note: bamboo coral
0:24:44 - Note: glass sponge
0:25:35 - Note: paragorgia
0:26:07 - Note: bamboo coral
0:27:17 - Note: crinoid
0:31:08 - Note: just passed wp6, similar bio abundance and diversity, rocky substrate, heading ~060 degrees towards wp7 up slope at ~1920 m. Predominately paragorgia, chrysogorgia and bamboo corals, mostly rocky substrate increasing trend in biodiversity
0:36:48 - Note: continuing transit towards WP 7
0:38:21 - Note: dead Isididae coralwith multiple Ophiuorids, a crinoid and an anemone
0:38:32 - Note: possibly zoanthid associates
0:39:06 - Note: correction: previous zoanthids, all anemone sightings
0:40:13 - Note: soft coral sighting
0:40:30 - Note: possible id: Isididae
0:41:56 - Note: substrate is similar throughout the slope
0:44:28 - Note: dead coral sightings
0:44:44 - Note: Paragorgia and Chrysogorgia sightings
0:46:38 - Note: Ophiuroid leaving a Chrysogorgia
0:46:50 - Note: Hydroids on dead coral
0:48:22 - Note: brittle star associates on top of coral
0:49:23 - Note: unhealthy paragorgia covered in zoanthids
0:50:37 - Note: Iridigorgia magnaspiralis from far
0:50:52 - Note: magnispiralis*
0:51:48 - Note: possible chrysogorgia geniculata
0:53:06 - Note: diseased coral covered in zoanthids
0:56:28 - Note: stalked sponge sighting
0:57:48 - Note: id for sponge: Euplectellidae 
0:58:53 - Note: substrate similar, low relief black encrusted rock slabs
0:59:15 - Note: diseased coral and stalked glass sponge
1:00:25 - Note: possible hydroid con stalked sponge
1:01:57 - Note: possible paragorgia sighting
1:02:22 - Note: confirmed paragorgia sighting covered in zonathids
1:04:08 - Note: stocked crinoids
1:04:53 - Note: mushroom coral
1:06:10 - Note: isopod associate to mushroom coral
1:07:28 - Note: possible mushroom coral with polyps retracted
1:10:53 - Note: soft coral sighting from far
1:11:17 - Note: possible Isididae coral
1:12:26 - Note: confirmed large branched Isididae coral
1:14:53 - Note: Zoanthid sighting on diseased cral
1:14:57 - Note: coral*
1:15:17 - Note: large Isididae from far
1:16:00 - Note: previous coral with large crinoid purple associate
1:21:58 - Note: potential ground fault on Herc
1:22:10 - Note: ground fault fixed, back to normal
1:28:16 - Sample: large light pink Isididae coral ~ 3 x 2m, branched. Coral clipping was made at a branching node, 20cm in length (Sample ID: NA149-068) (Sample Type: ROVGrab)
1:30:41 - Note: anemone sighting
1:33:20 - Note: tocky substrate with very little sand patches
1:33:52 - Note: rocky*
1:36:32 - Note: arrived to top of the slope
1:42:35 - Note: sea star sighting
1:44:51 - Note: Umbellapathes sighting
1:45:00 - Note: Black coral sighting
1:45:08 - Note: Isididae sighting
1:45:48 - Note: Ophiruoid associates
1:50:10 - Note: Euplectellidae sponge sighting
1:51:05 - Note: diseased coral with hydroids
1:51:58 - Note: mushroom coral sighting
1:53:45 - Note: fish sighting
1:55:05 - Note: sea stars appear to be eating corals
1:57:46 - Note: zoanthid covered coral skeletons