NA153_H1999_(10of10)_20230823T200847Z
Channel: Nautilus Live Dive Recordings
Date: 2023-12-06

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.

00:01:22 - 20230823T201010Z Note:  Hemicorallium with zoanthids
00:05:23 - 20230823T201410Z Note:  Stalked_crinoid
00:05:40 - 20230823T201428Z Note:  unstalked*
00:06:23 - 20230823T201511Z Note:  Fish
00:07:25 - 20230823T201612Z Note:  Flat top with sediment
00:08:27 - 20230823T201714Z Note:  Chrysogorgia
00:09:54 - 20230823T201841Z Note:  Intrusive wall of lava
00:10:04 - 20230823T201851Z Note:  mushroom_coral
00:11:01 - 20230823T201948Z Note:  Munidopis_guocghuani
00:11:16 - 20230823T202003Z Note:  Spongy_debris
00:11:37 - 20230823T202025Z Dive Status: offbottom
00:12:25 - 20230823T202112Z Dive Status: offbottom
00:20:38 - 20230823T202926Z Note:  Ascended 375m away from WP 5
00:42:49 - 20230823T205137Z Note:  18:00-22:00 WATCH SUMMARY Contouring the edge for 100 m, next 100 m dropping below to explore cliff face, repeating until we reach WP4. Sheet flows and lava tubing have been pervasive atop cliff face. Traced the edge of rocky outcrop and cliff face with overhangs. Oberved abundant and diverse biology: Chrisogorgia, Poliopogon, Tretopluera, Ramuligorgia militaris, Many squat lobsters (Munidopis guocghuani and Uroptychus sp.), chrysogorgia, primnoids, Demosponge Dendricellidae, Planar and bottle brush Chrysogorgia sp. present in greatest abundance. Followed by demosponges and Tretopleura sp. (family Uncinateridae) Cracks indicate this overhang will fall away eventually like the rest of this area. Cracks are caused by weathering in rocks and gravity Cliff face displayed successive lava flows. Sheet flows on top of pillow flows below Currently ~5 m away from the wall horizontally Other biology observed - Dark Tadpole-like fish - Bassozetus sp., Cusk eel, Acanella weberi, Chrysogorgiidae Rhodaniridogorgia n. sp. Passed WP 4 and headed trowards WP5 Flat top with sediment and followed the path of another intrusive wall of lava resembling a man-made wall Ascended 375m away from WP 5
01:09:18 - 20230823T211805Z Note:  Siphonophore
01:13:02 - 20230823T212149Z Note:  Shrimp
01:18:01 - 20230823T212648Z Note:  Oxygen concentration minimum 25 umol/L at 595 m depth
01:44:22 - 20230823T215309Z Note:  herc and atalanta dead and without power, holding at 90 m
01:45:11 - 20230823T215359Z Note:  negative on last entry, grafana was displaying old data from lack of power to vehicles
01:45:16 - 20230823T215404Z Note:  atalanta on deck
01:47:34 - 20230823T215621Z Note:  ship moving forward, eastward at 0.5kt for dead herc recovery
01:52:42 - 20230823T220130Z Note:  herc off stern port quarter
01:54:02 - 20230823T220250Z Note:  herc in the crane
01:55:12 - 20230823T220400Z Note:  herc on deck