When you are on an island, diving underwater is your first instinct. Especially if there are beautiful corals underneath. Listed on UNESCO's heritage site list, this natural park comprises of some great underwater species and colorful corals. The reef expands to 181 km and is a major spot for marine biodiversity. Green Sea Turtles, Sharks, Dolphins and 360 coral species are some common sightings in these seas. So dive in !