The Similan Islands are a group of 11 islands in the Andaman Sea, about 100 km northwest of Phuket. The islands are a popular tourist destination, renowned for their diving. The Similan Islands consist of the following islands: Koh Bon Koh Tachai Koh Payu Koh Miang Koh Similan Koh Bon Koh Tachai Koh Payu Koh Miang Koh Similan