earthstory:The Bahamas from space.This group of 700 atolls and keys in the Atlantic are the tips of
earthstory:The Bahamas from space.This group of 700 atolls and keys in the Atlantic are the tips of great banks poking out above the ocean surface. The bedrock is fossil coral, with lagoonal oolitic limestone derived from the erosion and precipitation of reefs and shells bedded above it. The highest point is only 63 metres above sea level. Only one river exists in the entire archipelago. The photo was snapped from the ISS by NASA astronaut Karen Nyberg.Loz -- source link