Water ripples over sand in the Virgin Islands.


Turbines at the Barrage de la Rance electric power generating station in France create a whirlpool in the Rance River.


Sandbars flow into the Coral Sea at Whitsunday Island National Park in Queensland, Australia.


Rushing water creates deep-blue waves at the Chicago Botanic Garden in Illinois.


Waves from the Pacific Ocean leave lines in the sand at Pismo Beach in California.


Thick sea ice in the Arctic Ocean's Beaufort Sea traps air bubbles.


Water ripples resemble an impressionist painting in Costa Rica.


In the midst of a full algae bloom, the waters of Kenya's Lake Magadi run red.


Sunlight and stones create an undulating effect on a Canadian river bottom.


The Pacific Ocean tide rises onto a black-sand beach in Manzanillo, Mexico.