The Bahamas (all coral in origin) are a group of nearly 700 (atolls) ringlike coral islands, and (cays) small, low islands composed largely of coral or sand.
The islands were mostly created by the disintegration of coral reefs and seashells, and low scrub covers much of their surfaces.
The highest point is located on Cat Island, where limestone rock rises to 63 m (206 ft) above sea level.
There are a handful of small freshwater lakes and just one small river located on Andros Island.
