Snorkel the lagoon at Kiritimati

Dazzling turquoise South Pacific lagoon.

Coral heads and reef fish in a lagoon 40 km across, with WWII wrecks off the atoll edge.

Protected lagoon reefs and islets.

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

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

Jordan’s slice of the Red Sea: coral gardens, a sunken tank and the Cedar Pride wreck in warm, calm water.

Uninhabited island with crystal water.

Mushroom-shaped jungle islets, UNESCO-listed.