National parks of Similan Islands Located at Tambon Ko Phra thong, Amphoe Phang Nga province covers an area of 80000 Rai declared as a national park on September 1 that 2525 (1982) iland is a yawi or Malay language meaning the nine Similan Islands are the small islands. There are 9 Islands in the Andaman Sea from North to South are Koh Yong Hu. Palm Island, Palm Island, the island is still wrapped in one! Koh Pai Yu Skull Island. Similan Islands & Koh BA snake. Similan Islands is heralded as the Islands are beautiful, both on land and under the water, there are many types of coral can dive in shallow water and deep water. The rare fish can be found, such as dolphin and whale fishing rod re flow the last month of the most tourists is November to April. In addition, to declare closed the island.