Great Bahama Bank, Bahamas – January 13th, 2009
In this extremely clear image of part of the Bahamas, we can see a curve of the Great Bahama Bank. Upon opening the full image, Andros Island (far left), Long Island (far right) and Exuma Island (left of the former) are also visible.
The Bahama Banks are submerged carbonate platforms that make up much of the Bahama Archipelago.
The term is usually applied in referring to either the Great Bahama Bank around Andros Island, or the Little Bahama Bank of Grand Bahama Island and Great Abaco, which are the largest of the platforms, and the Cay Sal Bank north of Cuba.
The waters of the Bahama Banks are very shallow; on the Great Bahama Bank they are generally no deeper than 25 meters, hence their light blue color in the image.
The slopes around them however, such as the border of the Tongue of the Ocean in the Great Bahama Bank, are very steep. These slopes are visible in the image as the lines that seem to radiate out from the dark circle.
This dark blue curve is the deep waters of the Tongue; in that particular area the waters reach 1300m in depth – a stark contrast to the 25m depth above the slopes.