This NASA Earth Observatory photograph captures the ethereal beauty of underwater sand dunes in the Bahamas. Tides and ocean currents shape the underwater sand much like wind on land, but the ...

As south Baldwin County battles to clear oil from its beaches and prevent more from washing in, concern is mounting about the condition of the underwater lodes of white quartz sand that the ...

Only eight metres off the white sand shores off Long Island in the Bahamas is the deepest blue hole in the world: Dean’s Blue Hole. This spectacular underwater feature has been wowing freedivers ...

Scientists grasped the extent and size of the underwater dunes -- technically known as "sand waves" -- only recently, aided by sophisticated, multiple-beam sonar that provides stunningly detailed ...