The Similan archipelago consists of eleven picturesque islands, which include Koh Bangu, Koh Bon, Koh Ha, Koh Hin Pousar, Koh Huyong, Koh Miang, Koh Payan, Koh Payang, Koh Payu, Koh Similan and Koh Tachai. All the islands belong to the Mu Koh Similan National Park, that spreads 140 square kilometers. These islands are the perfect travel destination for tourists who like to snorkel, dive, and explore remote and desolated places full of wildlife. Crystal clear shallow waters surround all the Similan Islands that harbor excite rock formations and spectacular coral reefs. Marine life around the Similan Islands is unmatched in Thailand and the region. The Similans are not available during the monsoon season from May 15 until October 15. Go to the islands in Siam Gulf with different seasonality, such as Koh Tao, Koh Phangan, and Angthong National Marine Park.