"This photograph taken from the Internation Space Station shows the shallow sand bars to the west (left side) of Eleuthera Island in the Bahamas. The water there is only a few feet deep. To the east (right side) the seep water is a pure blue-no subsurface features are visible. (Image ISS004-E-8777 courtesy NASA-JSC Gateway to Astronaut Photography of Earth.)"
via redorbit.com
