Wave breaking over a reef
Fairy basslet fish among lettuce coral
Silverside fish in underwater grotto
Parrotfish on reef cluster
Longfin bannerfish
Schoolmaster snappers hovering near a support beam
Coral, sea fan, and chromis fish
Underwater view of an ice flow
Stalks of coral
Diver exploring wire coral
Fish and salps in bowie seamount
Corals and grouper fish
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Red Sea Reef
A wave breaks over a coral reef in the Red Sea. Coral reefs form when colonies of tropical marine plants and animals with limestone skeletons rise atop earlier generations.
Photograph by Nick Caloyianis

Underwater Landscapes

See photos of underwater landscapes and download free desktop wallpapers, from National Geographic.

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