The actual resource itself:
BOEM Northern Gulf of Mexico Deepwater Bathymetry Grid from 3D Seismic | BOEM: "Northern Gulf of Mexico deepwater bathymetry grid created from 3D seismic surveys. The grid defines water depth with 1.4 billion 40-by-40 ft cells and is available in feet and meters. BOEM grid coverage is the area defined by the color in this image. Shaded relief is vertically exaggerated by a factor of five."
'via Blog this'