Koh Bida Nok and Koh Bida Nai are the two most famous dive sites at Phi Phi.

Bida Nok has outstanding hard and soft coral and an abundance of marine life. Sightings include leopard sharks, turtles, moray eels & ghost pipe fish, plus there is always a chance of the unexpected whale sharks, manta rays and other pelagic action.

With one side of the island being very shallow and the other dropping off to 30 meters this makes this site suitable for all levels of diver and is a popular dive site.

Adjacent to Koh Bida Nok there is Koh Bida Nai also known as Fantasy Rock. A few large underwater bolders of the island makes diving extra interesting. The marine life is basically the same as that of Koh Bida Nok as are the chances of encountering the leopard sharks, all in all another excellent dive site.