Untouched Red Sea reefs and islands.
Dive the sunken nuclear-test fleet.
Praslin’s granite-boulder beach, often ranked among the world’s best.
Coral heads and reef fish in a lagoon 40 km across, with WWII wrecks off the atoll edge.
WWII wrecks and pristine reefs.
Hundreds of mantas feed in this tiny bay during the monsoon plankton blooms.
Long protected reef off Antigua's south coast.
The world's longest freshwater lake.
Clear freshwater lake teeming with cichlids.
Gozo’s famous rock chimney dive beside the collapsed Azure Window.
Caribbean islands on the Mesoamerican reef.
Shark dives in a vast lagoon.
World-class reef diving off Roatan.
Coral islands and old Swahili towns.
Indian Ocean islands and sandbars.
Old Red Sea port with Ottoman ruins.
Dive with whale sharks and mantas.
Caribbean archipelago of stilt hotels, starfish beaches and surf — Panama’s laid-back party islands.
Reefs Cousteau chose for his underwater village, with hammerheads at Sha’ab Rumi and almost no other divers.
Cave reef made famous by James Bond.
Current-swept island reefs at the mouth of the Red Sea.
The largest reef in the northern hemisphere: nurse sharks and rays at Hol Chan, turtles and 500 species of fish.
Plunge into a deep ocean sinkhole off Andros.
Caribbean archipelago of coral cays.
A Japanese fleet sunk in 1944 lies in shallow, clear water — a dozen wrecks divers can swim through.
Clear Caribbean sinkholes and reef right off the shore at Playa Giron.
Bangka boat trips between limestone lagoons, hidden beaches and the Big and Small Lagoon of Bacuit Bay.
Drift between the American and Eurasian tectonic plates in gin-clear glacial water.
Drop into a limestone sinkhole of crystal-clear fresh water on the Yucatan, where the Maya saw the entrance to the underworld.
Fringing reef in Western Australia where whale sharks cruise close to shore.
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