Visit the Quirimbas Islands

Indian Ocean islands and sandbars.

Caribbean archipelago of coral cays.

Untouched Red Sea reefs and islands.

Dhow trips to the Bazaruto archipelago, dugongs and dune islands in turquoise water.

Laid-back pair of jungle islands with clear water and cheap beachfront snorkelling.

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

Three tiny car-free islands off Lombok — turtles, reef bars and no traffic at all.

Bangka boat trips between limestone lagoons, hidden beaches and the Big and Small Lagoon of Bacuit Bay.