Andros Island. North Andros (top) is separated from South Andros (bottom) by three tidal creeks - North, Middle and South Bights. The dark blue, deep waters of the Tongue of the Ocean are seen in the lower right corner, while the light blue, shallow waters overlying the Great Bahama Bank are in the upper left.
Date Taken: May 1992 - NASA Photo ID: STS049-151-116

Andros Island. North Andros (top) is separated from South Andros (bottom) by three tidal creeks - North, Middle and South Bights. North Bight is clearly visible in the center of the photo, while South Bight is at the bottom. The deep waters of the Tongue of the Ocean are seen in right, while the shallow waters overlying the Great Bahama Bank are to the left.
Date Taken: July 1992 - NASA Photo ID: STS050-77-047

Most of the Western Bahama Banks, the Tongue of the Ocean and Andros Island (24.0N, 77.0W) as well as north central Cuba with its fringing reefs can be seen in this one view. The green water over the banks is less than 3 meters deep but the dark blue of the Tongue is 2000 meters deep. All the sediment on the banks, including the material that forms the islands, is calcium carbonate precipitated from sea water by animals and plants. Date Taken: 05/16/92 - NASA Photo ID: STS049-99-061