Depth
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Fathom
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    • Hadal Zone

    Bathypelagic

    1,000 to 4,000 meters — permanent darkness, Fathom's standard operating depth.
    -2,340M
    FTH-064

    East Ridge Octopus Sighting

    East Scotia Ridge segment
    Completed
    -1,290M
    FTH-119

    Deep Octopus Behavior Study

    Monterey Canyon approach
    Completed
    -2,790M
    FTH-071

    Vent Cucumber Population Survey

    Central Indian Ridge segment
    Completed
    -2,510M
    FTH-081

    Vent Fauna Cluster Documentation

    Eastern Pacific Rise segment
    Completed
    -2,380M
    FTH-104

    Meridian Vent Field Fauna Count

    Undisclosed mid-ocean ridge segment
    Completed
    -1,650M
    FTH-098

    Sibelius Seamount Coral Garden

    Sibelius Seamount, North Pacific
    Completed
    -1,840M
    FTH-112

    Wagner Seamount Coral Survey

    Wagner Seamount, North Pacific
    Completed