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Amphoe Mueang, Chumphon
0 7756 0245 - 7 or 0 2472 1825.
These two islands offer some of the best diving spots in the Gulf of Thailand, with coral reefs, rocks, and underwater caves.
Koh Ngam Yai and Koh Ngam Noi are about 17 kilometers off shore, just south of Ao Thung Wua Laen.
For further information and to make arrangements for boats, contact Chumphon Cabana Resort at 0 7756 0245-7 or 0 2472 1825, or call Mu Ko Chumphon National Park at 0 7755 8144.