Gorgeous underwater sand dunes (or how Earth never ceases to amaze me)

The underwater world is a strange and haunting one. 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 result is just different enough to be otherworldly. » 1/18/14 10:44am 1/18/14 10:44am