The Surin Islands, although visited by several dive operators from Phuket, are more appropriately famous for their beautiful coves, bays and dense jungle than they are for their diving.

Spending a few idyllic days on a sail boat or other yacht here are the stuff dreams of paradise are made of yet the serious diver will be bored easily after a few dives because of the generally poor visibility and lack of fish. Until recent, Koh Surin's reefs were subject to much blasting by fishermen. Sport diving, game fishing and simple nature excursions are now the main attractions. Even though some of the coral reefs around Koh Surin to all appearances remain spectacularly healthy.

Tourism Authorities have installed mooring buoys on some reefs and these have proven effective in reducing anchor damage to corals. Again, as in other areas of the Andaman Sea and the Gulf of Thailand, commercial collecting is pushing some species of shellfish to the brink of local extinction.

		Koh Surin archipelago is a 135 square kilometers area lying in the Andaman Sea some 53 kilometers off mainland Ranong Province. The park's five islands lie just south of the border with Burma. The two main islands, Koh Surin Nua and Koh Surin Tai, are separated by a narrow strait, only 200 meters wide, with almost no flat ground beyond small pockets of mangrove and little beaches which nestle in the many coves.
The 2 islands cover 19 square kilometers respectively 12 square kilometers with the highest point on the latter one elevating to 350 meters. The other islands in the group are only rocky islets, sparsely covered with scrub vegetation.

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