U.S. Bathymetric and Fishing Maps | NCEI - Sea bottom mapping
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The oceans' floors are every bit as varied as those on land, with plunging valleys and huge mountains. Making a map of them has been an. Seafloor mapping, also called seabed imaging, is the measurement of water depth of a given The mapping of the sea floor started by using sound waves, contoured into isobaths and early bathymetric charts of shelf topography.