EX2301 NOAA Ocean Exploration Deep Sea Animal Research Center at University of Hawai'i at Manoa contentProvider Ashley Marranzino NOAA Ocean Exploration Affiliate https://orcid.org/0000-0002-6451-1139 distributor 2026-05-11 eng

From April 13-27, 2023 (Portland, Oregon, to Seattle, Washington), NOAA Ocean Exploration conducted the 2023 Shakedown + EXPRESS West Coast Exploration expedition (EX2301), an ROV and Mapping expedition to a shakedown the remotely operated vehicle (ROV), video, telepresence, seafloor mapping, and sampling operations aboard NOAA Ship Okeanos Explorer, as well as explore deep waters off the west coast of the United States. Operations during this 15-day expedition included the completion of 9 successful remotely operated vehicle (ROV) dives, which were conducted in water depths ranging from 650 m to 3960 m for approximately 45:34 hours of bottom time and resulted in the collection of 92 samples. This research used data collected during NOAA Ship Okeanos Explorer expedition EX2301, led by NOAA Ocean Exploration. Taxonomic identifications provided by the Deep-sea Animal Research Center at University of Hawai'i at Manoa. Additional Data Resources: Project website: https://oceanexplorer.noaa.gov/expedition/ex2301/ Expedition report: https://repository.library.noaa.gov/view/noaa/55891 Data was archived with NOAA’s National Centers for Environmental Information (NCEI): https://www.ncei.noaa.gov/waf/okeanos-rov-cruises/ex2301/ Annotation dataset (provided by DARC) archived with NCEI: https://oer.hpc.msstate.edu/okeanos/ex2301/Eventlogs/VideoAnnotations-Version2/ Specimen/ Sample Data: Sample records archived at NCEI: https://www.ncei.noaa.gov/data/oceans/archive/arc0219/0283599/1.1/data/0-data/submersible/Submersible_Specimen_Data/EX2301_Cruise_Specimens.csv Biological samples were sent to the Smithsonian National Museum of Natural History (SNMNH): https://collections.nmnh.si.edu/search/iz/ Geological samples were sent to Oregon State University’s Marine Geological Repository: https://osu-mgr.org/noaa-ex Water collected and filtered for eDNA analyses were sent to the SNMNH. Sample catalog numbers: https://geome-db.org/record/ark:/21547/FjB2 NCBI bioproject: https://www.ncbi.nlm.nih.gov/bioproject/1285415 eDNA data in OBIS: https://ipt-obis.gbif.us/resource?r=noaa-oer-okeanos-ex2301

Samplingevent GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License. Creative Commons Attribution 4.0 International https://spdx.org/licenses/CC-BY-4.0.html CC-BY-4.0 https://www.ncei.noaa.gov/waf/okeanos-rov-cruises/ex2301/ United States West Coast -128 -122.607 48.778 39.504 2023-04-13 2023-04-27 From April 13-27, 2023 (Portland, Oregon, to Seattle, Washington), NOAA Ocean Exploration conducted the 2023 Shakedown + EXPRESS West Coast Exploration expedition (EX2301), an ROV and Mapping expedition to a shakedown the remotely operated vehicle (ROV), video, telepresence, seafloor mapping, and sampling operations aboard NOAA Ship Okeanos Explorer, as well as explore deep waters off the west coast of the United States. Operations during this 15-day expedition included the completion of 9 successful remotely operated vehicle (ROV) dives, which were conducted in water depths ranging from 650 m to 3960 m for approximately 45:34 hours of bottom time and resulted in the collection of 92 samples. This research used data collected during NOAA Ship Okeanos Explorer expedition EX2301, led by NOAA Ocean Exploration. Taxonomic identifications provided by the Deep-sea Animal Research Center at University of Hawai'i at Manoa. This research used data collected during NOAA Ship Okeanos Explorer expedition EX2301, led by NOAA Ocean Exploration. Taxonomic identifications provided by the Deep-sea Animal Research Center at University of Hawai'i at Manoa. unknown NOAA Ocean Exploration ROV expeditions are conducted according to procedures as outlined by Galvez et al., 2025: https://repository.library.noaa.gov/view/noaa/70281 Expedition report: https://repository.library.noaa.gov/view/noaa/55891 United States West Coast ROV expeditions are conducted according to procedures as outlined by Galvez et al., 2025: https://repository.library.noaa.gov/view/noaa/70281. 2026-05-11T22:23:07.809+00:00 dataset EX2301_CruiseSpecimens.csv ASCII CSV https://oer.hpc.msstate.edu/okeanos/ex2301/EX2301_Cruise_Specimens.csv EX2301_Annotations ASCII CSV https://oer.hpc.msstate.edu/okeanos/ex2301/Eventlogs/VideoAnnotations-Version2/ https://ipt-obis.gbif.us/resource?id=ex2301_videoannotationsandsamples/v1.1.xml