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 whale , dolphin ,eels monreal ,and fish cartoon. November to April is the most amazing. Best from May to November monsoon season as the Southwest wind waves harm marine and hares. The Similan Islands are declared closed the island in May to restore nature. Similan Islands every year.