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    • Cetacean visual observations using line-transect survey methods onboard the NOAA Ship Gordon Gunter (GU) in the Gulf of America, for the Vessel Surveys for Abundance and Distribution of Marine Mammals and Seabirds project (VSAD survey GU2303) from 2023-06-22 to 2023-08-14 (NCEI Accession 0290373)

    Metadata Updated: November 1, 2025

    As part of the Vessel Surveys for Abundance and Distribution of Marine Mammals and Seabirds (VSAD) project, the Southeast Fisheries Science Center (SEFSC) conducted a shipboard survey of the U.S. oceanic waters of the Gulf of America out to the Exclusive Economic Zone (EEZ) from 2023-06-22 to 2023-08-14. The survey was designed for a two-team independent visual observer approach with distance sampling to estimate the detection probabilities for marine mammal sightings. A sighting constituted a single or group of marine mammals (whales and dolphins) seen at the same location and time. This dataset includes marine mammal visual observation data and effort points with surveying conditions that can be used in abundance and density modeling per visual line-transect survey protocols. This dataset also includes opportunistic marine mammal photographs and biopsy samples, and non-marine mammal sightings (a.k.a. occurrences) such as sea turtles.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date 2025-09-26T18:59:58Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date November 1, 2025
    Reference Date(s) April 27, 2024 (publication), June 2, 2025 (revision)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Dataset
    Metadata Date 2025-09-26T18:59:58Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date November 1, 2025
    Reference Date(s) April 27, 2024 (publication), June 2, 2025 (revision)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0290373
    Access Constraints Cite as: Martinez, Anthony; Garrison, Lance; Rappucci, Gina; Litz, Jenny; Dias, Laura A.; Wicker, Jesse; Sinclair, Carrie (2024). Cetacean visual observations using line-transect survey methods onboard the NOAA Ship Gordon Gunter (GU) in the Gulf of America, for the Vessel Surveys for Abundance and Distribution of Marine Mammals and Seabirds project (VSAD survey GU2303) from 2023-06-22 to 2023-08-14 (NCEI Accession 0290373). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/rp7t-jn41. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long -83.46609
    Bbox North Lat 29.97844
    Bbox South Lat 24.13521
    Bbox West Long -96.48881
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0290373
    Graphic Preview Type PNG
    Harvest Object Id df9472c3-2a70-416a-bb7a-244ad6d78b05
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-96.48881, 24.13521], [-83.46609, 24.13521], [-83.46609, 29.97844], [-96.48881, 29.97844], [-96.48881, 24.13521]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2023-06-22
    Temporal Extent End 2023-08-14

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