Mu Ko Similan National Park has been rated first by the U.S. publication Skin Diving of the top ten dive sites in the world. Also, it is appraised by the Skin-Diving Magazine of USA as one of the top ten islands having both surface and under water beautiful scenery.

The Similan Island in the heart of the Andaman Sea are indeed unparelled in their exotic beauty. If planning a visit, keep in mind that anytime between December to April is recommended, with the best month being March, because the monsoons are over an the water is clear.

This park occupies an area of 80,000 rai and was announced as the national park area on September 1, 1982. There are two ways to access the Similan, i.e. taking a boat trip from the pier in Ban Thap Lamu, Amphoe Thai Muang, through a distance of 40 kms which takes about three hours or taking a boat trip from a pier in Amphoe Khura Buri through an approximate distance of 40 kms and it also takes about three hours. Similan, a small archipelago in the Andaman Sea comprises nine islands.

Some attractive islands of the national park include: