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Home » NASA Articles » Great Bahama Bank

Great Bahama Bank and Andros Island


Satellite image of the islands and the brilliant blue water



East of southern Florida, large swaths of ocean water glow peacock blue. These waters owe their iridescence to their shallow depths. Near Florida and Cuba, the underwater terrain is hilly, and the crests of many of these hills comprise the islands of the Bahamas. On February 12, 2009, relatively clear skies allowed the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite an unobstructed view of the region.


Oil seeps in the Gulf of Mexico
Satellite image of the Great Bahama Bank and Andros Island by Jeff Schmaltz, Goddard Space Flight Center / NASA. Larger Image


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The most striking feature of this image is the Great Bahama Bank, a massive underwater hill underlying Andros Island in the west, Eleuthera Island in the east, and multiple islands in between. To the north, another bank underlies another set of islands, including Grand Bahama. The varied colors of these banks suggest their surfaces are somewhat uneven. The banks' distinct contours, sharply outlined in dark blue, indicate that the ocean floor drops dramatically around them. In fact, over the banks, the water depth is often less than 10 meters (33 feet), but the surrounding basin plunges to depths as low as 4,000 meters (13,100 feet).

MODIS is not the only satellite to capture beautiful images of the Bahamas. The region's ocean water, sand, and seaweed make it equally dramatic in high-resolution satellite imagery.

NASA image created by Jeff Schmaltz, MODIS Rapid Response Team, Goddard Space Flight Center. Caption by Michon Scott.


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