There are 88 species of mammals in Sri Lanka. The Asian elephant, Cheetah, leopard and several species of monkeys are among them. And there are 144 species of reptiles. Some of them are Cobra, Viper, Python and tortoises. There are 100 identified species of frogs and 400 species of birds.
The rivers of Sri Lanka originate in the central highlands. From there they descend to the plains and empty in to the sea. The longest river of Sri Lanka is Mahaweli river is about 205 miles. Sri Lanka has no natural lakes.
Sri Lanka has a tropical climate. The monsoons bring two distinct periods of heavy rainfall. From May to October southwest monsoons bring rainfall. From December to March northwest monsoons bring rainfall.
Natural vegetation of Sri Lanka varies according to climate zone and elevation. Dense evergreen rain forests are found in southwestern lowlands. There are many varieties of palm, coconut, betel and palmyrah.