Our Ocean Contour Maps page features over 500 bottom contour maps that cover the entire U.S. for both the Atlantic Ocean and Pacific Ocean, as well as the Gulf of Mexico. While not suitable for navigational purposes, these maps show "structure" (depths, bottom contours, dropoffs, etc.) of the ocean. Ocean bottom topography, also known as bathymetry, is the measurement of the depth of large bodies of water.

To access the grid images simply click on one of the outlined volumes in the map.