Okeanos Explorer (EX2306): Seascape Alaska 5: Gulf of Alaska Remotely Operated Vehicle Exploration and Mapping

Sampling event
Latest version published by NOAA Ocean Exploration on May 11, 2026 NOAA Ocean Exploration
Home:
https://www.ncei.noaa.gov/waf/okeanos-rov-cruises/ex2306/
Publication date:
11 May 2026
Published by:
NOAA Ocean Exploration
License:
CC-BY 4.0

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 19 records in English (3 MB) - Update frequency: unknown
Metadata as an EML file download in English (11 KB)
Metadata as an RTF file download in English (11 KB)

Description

From August 23rd - September 14th, 2023 (Kodiak, Alaska to Seward, Alaska), NOAA Ocean Exploration conducted Seascape Alaska 5: Gulf of Alaska Remotely Operated Vehicle Exploration and Mapping (EX2306), a remotely operated vehicle (ROV) and mapping expedition to the Gulf of Alaska. Operations during this 23-day expedition included the completion of 19 successful remotely operated vehicle (ROV) dives, which were conducted in water depths ranging from 253.1 m to 4261.5 m for approximately 87 hours of bottom time and resulted in the collection of 383 samples. EX2306 also collected more than 28,000 sq. km of seafloor bathymetry and associated water column data using an EM 304 multibeam sonar. Occurrence data is based on annotations of ROV dive videos. This research used data collected during NOAA Ship Okeanos Explorer expedition EX2306, 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: Expedition report: https://repository.library.noaa.gov/view/noaa/60802Data was archived with NOAA’s National Centers for Environmental Information (NCEI): https://www.ncei.noaa.gov/waf/okeanos-rov-cruises/ex2306/.Annotation dataset (provided by DARC) archived with NCEI: https://oer.hpc.msstate.edu/okeanos/ex2306/Eventlogs/VideoAnnotations-Version2/ Specimen/ Sample Data: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-exWater collected and filtered for eDNA analyses were sent to the SNMNH. Sample catalog numbers: https://geome-db.org/record/ark:/21547/FjS2. NCBI bioproject: https://www.ncbi.nlm.nih.gov/bioproject/PRJNA1284389

Data Records

The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 19 records.

2 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

Event (core)
19
ExtendedMeasurementOrFact 
195813
Occurrence 
32877

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versions

The table below shows only published versions of the resource that are publicly accessible.

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is NOAA Ocean Exploration. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: f0bb28ad-fd47-44a1-87db-6e0fbcee5737.  NOAA Ocean Exploration publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF-US.

Keywords

Samplingevent

External data

The resource data is also available in other formats

EX2306_CruiseSpecimens.xlsx https://www.ncei.noaa.gov/data/oceans/archive/arc0241/0311845/1.1/data/0-data/EX_SODA_Archive_September_2025/exports ASCII Microsoft Excel
EX2306_Annotations https://oer.hpc.msstate.edu/okeanos/ex2306/Eventlogs/VideoAnnotations-Version2/ ASCII CSV

Contacts

NOAA Ocean Exploration
Deep Sea Animal Research Center at University of Hawai'i at Manoa
Ashley Marranzino
  • Distributor
NOAA Ocean Exploration Affiliate

Geographic Coverage

Gulf of Alaska

Bounding Coordinates South West [50, -155], North East [63, -130]

Temporal Coverage

Start Date / End Date 2023-08-23 / 2023-09-16

Sampling Methods

ROV expeditions are conducted according to procedures as outlined by Galvez et al., 2025: https://repository.library.noaa.gov/view/noaa/70281.

Study Extent Gulf of Alaska, 23 August - 14 September 2023

Method step description:

  1. 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://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/ncei/oer/iso/xml/EX2306_COLLECTION.xml&view=xml2text/xml-to-text-ISO Additional metadata associated with the expedition: https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/ncei/oer/iso/xml/EX2306_COLLECTION.xml&view=xml2text/xml-to-text-ISO

Additional Metadata

Acknowledgements
Purpose
Alternative Identifiers f0bb28ad-fd47-44a1-87db-6e0fbcee5737
https://ipt-obis.gbif.us/resource?r=ex2306