The sanctuary administrative office is in Point Reyes National Seashore.
The sanctuary's area is 399 square nautical miles (529 square land miles), similar in size to
Marin county, California, the closest land (520 square miles).
The Bank itself is 19 nautical miles west of the closest land, the Point Reyes lighthouse.
(22 land miles, 35 kilometers.)
The heart of the sanctuary is an offshore rocky bank 4.5 miles wide by 9.5 miles long.
Below is a zoomed in image of Cordell Bank showing shallowest areas of the Bank. The lighter colors
represent hard rocky areas, the dark areas are flat, soft sandy sediments. This shows the complexity
of seafloor habitat types of the Bank.
Visit this link
to download the Cordell Bank bathymetry shown here as well as other benthic mapping products.