Situated in Tambon Ko Phra Thong and covering an area of 84,375 rais (33,750 acres), Mu Ko Surin is an archipelago of 5 islands: Ko Surin Nuea, Ko Surin Tai, Ko Ri, Ko Khai, and Ko Klang. It was declared a national park on July 9, 1981. The archipelago is located in the Andaman Sea, near the Thai-Burmese sea border, to the west coast of Thailand. There are beautiful and unspoilt coral reefs; the area is suitable for snorkelling. The best time to visit is from November to April.

Ko Surin Nuea has several bays. The most well-known bay is Ao Mae Yai, the largest bay that offers calm waters. To the southeast of Ko Surin Nuea lies Ao Luek, which is so deep that the sea appears dark green, offering

splendid shallow corals as well as sea weeds, sea flowers, coral lines, and various species of fish. Sea Gypsy Village, a Singha, or Morgan, Sea Gypsy tribe resides on the shore of Hat Sai En, Ko Surin Nuea. There are 130-150 sea gypsies who still hold on to their traditional ways of life and still live in their boats. On shore, there is a wooden sculpture resembling the Indian Totem Pole and is considered a sacred area. Every year, on the 15th day of the waxing moon in April, the sea gypsies in this village would worship their respected spirits. The event lasts for 3 days. Ao Mai Ngam, situated to the west of Ko Surin Nuea with the National Parks office nearby. There is a 2-kilometre walking path that you can take to enjoy the natural features of Hat Mai Ngam or you can take a longboat ride. The lovely bay provides fresh water and a long beach that is best for snorkelling and swimming. Ao Chak, situated to the north of Ko Surin Nuea. The bay possesses unspoilt coral reefs.

Ko Klang or Ko Pachumba has a scenic bay called Ao Mangkon. The bay is teeming with splendid coral reefs and many schools of various kinds of fish.

Ko Khai or Ko Torilla, situated to the south of Ko Surin Tai. On the eastern side of the island there is a long stretch of unspoilt and picturesque coral reef. Snorkelling is the most recommended activity here.