Located in the typical geographical area of the northernmost tropical marine climate zone with the terrestrial area of 35,400km2 and the marine area of 2 million km2, Hainan Province has not only the main complex ecological system of the tropical rainforest, but also the unique coastal wetland ecosystem and marine biological ecosystem. Therefore Hainan boasts to be one of the areas with the richest biodiversity in China and even in the world.