A pit viper is an endemic species which means that it cannot be seen anywhere else on the Earth. Pit vipers are venomous snakes, whose poison possesses healing properties.
In 2004, this species was included in the list of China's endangered animals. According the UNESCO (the United Nations Educational, Scientific and Cultural Organization), in the natural reserve on the island there are also 307 species of birds, for whom the island is an important stop along their migration route.