Snorkel Mohéli Marine Park

Oceanic island off Borneo ranked among the best dive sites on Earth — turtles, barracuda tornadoes, reef sharks.

Protected lagoon reefs and islets.

Granite-boulder islands in the Andaman Sea with some of Thailand’s clearest water and best coral.

Sail to uninhabited reef-ringed islets.

Fringing reef in Western Australia where whale sharks cruise close to shore.

The planet's richest coral reefs.

Ras Mohammed’s coral walls and the Thistlegorm wreck, with visibility so clear the reef looks lit from within.

Clear Caribbean sinkholes and reef right off the shore at Playa Giron.