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    • Guam and CNMI Underwater Photomosaics

    Metadata Updated: May 22, 2025

    This data package contains georeferenced underwater photomosaics for more than 600 sites in 0 to 50 meter depths around the islands of Guam and Saipan. The photographs used to create these photomosaics were acquired from August 2021 to May 2022 using digital single-lens reflex camera (DSLR) cameras. Green lasers provided a measurement scale (10 cm). A Trimble GeoXH GPS provided the location of the vessel, and a Blueprint SeaTrac ultra short baseline (USBL) X150 beacon and X010 transponder provided the location and depth (XYZ) of the drop camera. The photographs were georeferenced (i.e., given a latitude and longitude), and mosaicked using a custom Python script (Pierce and Winians, 2023; performed using Agisoft Metashape application programming interface). The field work in Saipan was funded by NOAA National Centers for Coastal Ocean Science (NCCOS) and the NOAA Coral Reef Conservation Program (CRCP). The field work in Guam was funded by the Naval Facilities Engineering Command Marianas (NAVFAC Marianas). Both efforts were conducted in partnership with and in consultation with local partners and the territorial governments.

    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.

    Downloads & Resources

    Dates

    Metadata Date May 15, 2025
    Metadata Created Date October 18, 2024
    Metadata Updated Date May 22, 2025
    Reference Date(s) May 31, 2024 (creation), May 31, 2024 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOS NCCOS

    Other Data Resources

    Graphic Preview

    NA

    Additional Metadata

    Resource Type Dataset
    Metadata Date May 15, 2025
    Metadata Created Date October 18, 2024
    Metadata Updated Date May 22, 2025
    Reference Date(s) May 31, 2024 (creation), May 31, 2024 (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:72703
    Access Constraints Cite As: National Centers for Coastal Ocean Science, [Date of Access]: Guam and CNMI Underwater Photomosaics [Data Date Range], https://www.fisheries.noaa.gov/inport/item/72703., Access Constraints: Access Constraints: None | Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual benthic conditions. Users should not use this data for critical applications without a full awareness of its limitations. | Distribution Liability: This dataset is dynamic and may change with time. Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, National Center for Coastal Ocean Science or its partners., Use Constraints: Cite As: NOAA NCCOS. [Date of Access]: 2021-2022 Benthic habitat characterization: Guam and Saipan [Data Date Range], https://www.fisheries.noaa.gov/inport/item/72703. Access Constraints: None | Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual benthic conditions. Users should not use this data for critical applications without a full awareness of its limitations. | Distribution Liability: This dataset is dynamic and may change with time. Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, National Centers for Coastal Ocean Science or its partners.
    Bbox East Long 145.837466
    Bbox North Lat 15.294146
    Bbox South Lat 13.212093
    Bbox West Long 144.582286
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description NA
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0291792
    Graphic Preview Type jpg
    Harvest Object Id 7781ff60-80a9-44a3-8f66-42a3f397e026
    Harvest Source Id 9594655d-43d5-48eb-bc7d-86f579a54e78
    Harvest Source Title NOS NCCOS
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage This data was collected by NOAA National Centers for Coastal and Ocean Science (NCCOS). The photographs and positioning information were acquired from August 20, 2021 to May 12, 2022. The photographs were acquired using Nikon D7500 camera in 2021 and a Sony alpha7 IV mirrorless camera in 2022). Green lasers provided a measurement scale (10 cm). A Trimble GeoXH GPS recorded the location of the vessel, and a Blueprint SeaTrac ultra short baseline (USBL) X150 beacon and X010 transponder recorded the location and depth (XYZ) of the cameras. The resulting photographs were georeferenced (i.e., given a latitude and longitude), and mosaicked to produce photomosaic and 3D model of the seafloor using a custom Python script (Pierce and Winians, 2023; performed using Agisoft Metashape application programming interface).
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[144.582286, 13.212093], [145.837466, 13.212093], [145.837466, 15.294146], [144.582286, 15.294146], [144.582286, 13.212093]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System EPSG::4326
    Spatial Harvester True
    Temporal Extent Begin 2021-08-20
    Temporal Extent End 2022-05-12

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