Bangtao Beach on the west side of the Thai resort island of Phuket is where some of the most luxurious hotels and resorts are located. Phuket formerly derived its wealth from tin and rubber, and enjoyed a rich and colorful history, although now of course derives most of its income from tourism. The name Phuket is apparently derived from the Malay word bukit that means "hill", as this is what the island appears like from the sea. Thanks to Kate who was visiting.
Mu Ko Similan National Park is an archipelago of nine islands in the Andaman Sea, not far from the coast of Phuket, actually. It is one of the world's top diving destinations.