NA149_H1958_(2of6)_20230531_123042Z
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.

0:05:11 - Note: push core did not work 
0:09:46 - Note: moving towards wp 2
0:19:39 - Note: we have reached the rock line 
0:22:39 - Note: lithodidae king crab
0:24:35 - Note: testing laser divebot  over dead fish 
0:26:05 - Note: got good readings from spectrometer from crab and dead fish 
0:27:49 - Note: sandy slope 
0:29:00 - Note: attempted rock sample 
0:30:21 - Note: testing spectrometer on carbohydrate rock that we attempted to collect
0:34:04 - Note: slope seems to be comprised of carbonate terraces
0:43:45 - Sample: Chalky carbonate rock  (Sample ID: NA149-104) (Sample Type: Scoop)
0:52:51 - Note: moving along slope noting dc ground fault but going to leave raman on for a little bit 
0:54:44 - Note: middle/top of a guyot
0:57:11 - Note: ID on coral is scleroptilidae
0:59:15 - Note: steep layers with not much attached but we do see a black coral here
0:59:35 - Note: turning off raman 
1:00:01 - Note: black coral was a stauropathes
1:03:59 - Note: halosaur
1:10:22 - Note: real texture-y carbonate chalky guyot
1:11:43 - Note: starting to look similar to when we first started the dive 
1:15:26 - Note: looking to go back down slope to maybe ride along the wall 
1:20:47 - Note: so far we have been over sandy sediment seeing not much bio but have seen sharks, shrimps,  pseudostichopus, aristeidae, scleroptilidae. Moved towards rocky boulder substrate where we noted a king crab eating dead fish then transitioned into sandy chalky carbonate terraces where we collected a rock sample and now just still moving along slope  
1:30:35 - Note: watch change
1:35:31 - Note: Substrate consisting of wide chalky slabs, currently ~1420 m in depth, zigzagging up slope of feature heading ~290 degrees
1:35:41 - Note: urchin
1:40:00 - Note: sea pen
1:40:16 - Note: urchin
1:41:22 - Note: Balticina sea pen
1:47:32 - Note: laser sample of urchin with spectrometer
1:56:19 - Sample: urchin - Echinothuridae Tromikosoma hispidum, venemous spines (Sample ID: NA149-105) (Sample Type: ROVGrab)
1:58:29 - Note: crinoid, sea pen
1:59:27 - Note: crossing all sandy substrate with occasional sea pens and stalked crinoids
1:59:33 - Note: sea pen