Tortugas Bank
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The Tortugas Bank is the westernmost feature of the Florida Keys, but it is a submarine feature, wholly submerged, without any islands or above-water rocks. The least known depth is 11 meters. A depth of less than 18 meters is found in a circle of 4 km diameter around the center of the bank. Tortugas Bank is about 14 km west of Loggerhead Key, the westernmost islet of the Dry Tortugas and the closest piece of land.