Thailand
The Similan Islands are a marine national park archipelago of 11 islands in the Andaman Sea off Phang Nga Province, widely regarded as one of Thailand's premier scuba diving destinations.
Located roughly 70 km off the coast of Phang Nga Province, the Similan Islands form a continental archipelago of 11 islands protected since 1982 as Mu Ko Similan National Park. The park covers about 140 square kilometres of mostly marine area, with a land area of roughly 26 square kilometres. Two further islands, Ko Bon and Ko Tachai, were added to the park in 1998. The islands are usually accessed by boat from Tab Lamu Port near Khao Lak.