NA149_H1953_(4of7)_20230525_070544Z
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 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.

0:00:11 - Note: possible giant madrepora coral id from online chat
0:00:49 - Note: observing temperature changes along the dive
0:02:44 - Note: correction for id possibility of giant coral: hard Emallopsimia? soft coral
0:03:33 - Note: id giant coral species level, possible id: rostrata
0:04:09 - Note: substrate is now mainly giant encrusted boulders with minor sand patches
0:05:06 - Note: id correction: Corrallium coral
0:05:25 - Note: diversity spot with multiple soft corals
0:06:35 - Note: abandoning WP 3 transit for now, staying to explore the region and move along this depth
0:08:33 - Sample: Region with many Paramuricea, large corallidae, a Victogorgia sighting and some primnoids. (Sample ID: NA149-047) (Sample Type: Niskin)
0:11:58 - Note: because of weather, deciding to slowly continue moving from the high diversity spot
0:12:15 - Note: because of currents*
0:12:29 - Note: sea pens from far
0:12:50 - Note: substrate now composed of medium encrusted rocks in sand
0:13:48 - Note: multiple crinoids facing one direction (around 170 degrees)
0:14:51 - Note: venus fly trap anemone attached to crinoid a minute ago
0:15:23 - Note: Iridigorgia magnispiralis sighting
0:16:17 - Note: Farrea sponge sighting
0:18:16 - Note: multiple soft corals
0:19:23 - Note: noting from chat that Paramuricea is now family Paramuriceidae
0:20:26 - Note: possible small sponges sighting
0:21:40 - Note: Chrysogorgia sighting
0:21:55 - Note: possible old coral bases
0:25:39 - Note: multiple soft coral sightings from far
0:26:08 - Note: black crinoids and venus fly trap associates to Hemicorallium coral
0:27:11 - Note: multiple stalked crinoids
0:28:45 - Note: possible Holothurian sightings
0:29:41 - Note: confirming Holutharian sighting
0:31:37 - Note: soft coral with multiple associates
0:32:46 - Note: possible plexaurids or Paramuriceidae id on previous coral
0:33:19 - Note: stroniferan octocoral sightings on the rocks
0:34:11 - Note: id correction on previous coral: paramuricia, family Paramuriceidae 
0:34:47 - Note: coral graveyard
0:36:04 - Note: stolinepheran? sighting
0:36:39 - Note: id correction: small stolonifera sighting
0:37:12 - Note: zoanthid covering dead corals
0:37:25 - Note: purple stoloniferans sighted
0:38:14 - Note: DC ground fault observed on Herc
0:40:04 - Note: substrate is evenly distributed encrusted rocks with FeMn crust
0:41:08 - Note: multiple soft corals on top of boulders
0:42:58 - Note: continuing transit
0:46:12 - Note: zoanthid and soft coral sighting
0:47:08 - Note: unknown soft yellow coral with multiple associates including zoanthids, brittle starsn and possible hydroids
0:48:59 - Note: taking a zoanthid and possible paramuricia coral sample
0:54:29 - Sample: possible paramurcea yellow coral clipping ~3cm length (Sample ID: NA149-048) (Sample Type: ROVGrab)
0:55:35 - Note: note: both sample 048 and 049 share the same in site photo
0:59:46 - Sample: pale yellow zoanthids attached to yellow coral (possible paramuricea?) with snake star associate. Clipping around 10cm. (Sample ID: NA149-049) (Sample Type: ROVGrab)
1:02:11 - Note: continuing transit, following upwards contour towards WP 3
1:03:37 - Note: dead spiral coral
1:03:49 - Note: hagfish sighting
1:06:25 - Note: multiple crinoid sightings
1:08:00 - Note: ctenophore on atlanta sighting
1:09:48 - Note: mutiple zoanthid sightings attached to soft corals
1:10:24 - Note: going slowly upwards, chrysogorgia geniculata sighting
1:11:06 - Note: VIctogorgia sighting
1:11:10 - Note: basket star sighting
1:11:19 - Note: glass sponge sighting
1:11:37 - Note: green plexaurid
1:11:54 - Note: massive basketstar sighting
1:13:44 - Note: multiple stalked crinoids
1:13:53 - Note: primnoid sighting
1:14:07 - Note: this region hosts mutiple soft coral species
1:15:38 - Note: another spiral organism sighted, pending for id
1:18:16 - Note: DC ground fault on Herc back to normal