Sulu Sea, Philippines
The Tubbataha Reefs Natural Park is a UNESCO World Heritage Site located in the Sulu Sea. It is one of the most diverse marine ecosystems in the world, home to over 600 species of fish, 360 species of corals, 11 species of sharks, and nesting sea turtles.
Its pristine condition and remote location make it a premier destination for divers from around the world, especially between March and June — the only time the waves allow safe access.