Announced as a National Park in 1989 as Hat Sai Ri National Park, the national park changed its name to Mu Ko Chumphon on 24 February 1999. Mu Ko Chumphon is covering a total area of 317 square kilometres including Jorakae Island in Pathio District until Ngam Yai Island, Ngam Noi Island, Samet Island, Maprao Island, Mattra Island, Thong Lang Island, Langka JiewIsland, Thungka in Mueang District and some islands in Sawi District, Thung Tako District until Thong-krok bay in Lang Suan District. The Tourist Information Center of Mu Ko Chumphon National Park is located in the middle of a mangrove forest; the latter is connected with the wooden-bridge walkways for nature study of plants and wild animals. Mu Ko Chumphon National Park has a beach of more than 100 kilometres long, covering more than half of the area of Chumphon. There are many beautiful beaches such as Thung Makam Nai Bay and Thung Makam Nok Bay and Arunothai Bay. Besides that, the area of National Park also covers Sai Ri Beach where the Prince Kromluang Chumphon Khet Udomsak Shrine and the scenic point are situated. This national park consists of more than 40 islands. Some spots are suitable for diving and relaxation such as Jorakae (Crocodile) Island which is in the northern part of the national park with many round rocks around the island.