Similan is a Yawi or Malay word, which means nine or a group of nine islands. This is located in Tambon Ko Phra Thong, Amphoe Khura Buri, occupying an area of 32,000 acres. It was declared a national park on 1st September 1982.

           One of the best islands in Thailand named "Similan Islands" which is listed in the world ranking of top ten of the most beautiful islands is like underwater heaven full of beauty from colorful corals, fish and rare dolphins. Meanwhile, beaches on the shores are surrounded by soft and delicate sand. Everyone who has visited Similan Islands must go to Island 8 to take a photo with sailing rock which is the symbol of Mu Koh Similan national park like it is the important landmark to let everyone know that you have been to Mu Koh Similan. Mu Koh Similan National Park is situated in Pang-Nga province. The work Similan is Malaya language meaning nine. Mu Koh Similan is a small group of islands in Andaman Sea. There are 9 islands from the north to the south which are: 1. Koh Huyong which has the longest beach in 9 islands. It is also the spot where sea turtles lay their eggs. 2. KohPayang 3. Koh Payan *Surrounding areas of Island 1, 2, 3 or Koh Huyong, Koh Payang and Koh Payan are reserved to be the place where sea turtles lay eggs. Tourists are definitely not allowed to enter the island. 4.-5. Koh Meang which is the two islands connected to each other. It is where the office of the National Park is located. Rare hairy leg mountain crabs and Nicobar pigeons can be found here. There are 2 beautiful beaches. 6. Koh Payoo 7. Koh Hua Kalok is the islands that looks like skull. There are giant whipray, corals and underwater valley. 8. Koh Similan is the largest island. It offers both snorkeling and scuba diving to see corals and fish. The viewpoint is sailing rock. 9. Koh Ba-ngu is the diving area to see rocks underwater and Christmas Point rock pile. Later on Ta Chai Island has been included in Similan Islands. Koh Ta Chai is a very beautiful island with white sand beach suitable for swimming. Rare hairy leg mountain crabs can also be seen here. Travelling Season Opening and closing times for travelling season annually are: - Closed from 16thMay-31stOctober in every year - Open from 1stNovember-15thMay in every yearThe most appropriate period for travelling is between November and April