Photo obtained from Johnson Space Center archives -

NASA Photo ID: STS001-12-322

Date Taken: 04/14/81

Eleuthera Island, (24.5N, 76.0W) Bahamas Island Group, is one of several within the archipelago surrounded by shallow seas, visible here as light blue.  Mosaic patterns of sand waves built by sea bottom currents in the shallows stand out in stark contrast to the deep blue of the ocean depths of  a thousand feet in the Exuma Sound.