The Kingdom of Cambodia is a country in Southeast Asia, on the southern Indochina Peninsula, with Phnom Penh as its capital and largest city. Cambodia's rich biodiversity is mainly based on seasonal tropical forests, which contain around 180 species of trees. Science has recorded 212 mammal species, 536 bird species, 240 reptile species, 850 freshwater fish species and 435 marine fish species. The majority of this biodiversity is found around Tonle Sap Lake and the adjacent biosphere. The Worldwide Fund for Nature acknowledges six different terrestrial ecoregions in Cambodia: the rainforests of the Cardamom Mountains, the dry forests of central Indochina, the dry evergreen forests of Southeast Indochina, the tropical forests of the southern Annamite Range, the Tonle Sap freshwater swamp forests and the Tonle Sap-Mekong peat swamp forests. Sadly, the environmental degradation is also affecting national parks and wildlife sanctuaries to a large extent, and many endangered and endemic species are threatened with extinction due to habitat loss. Cambodia's wildlife includes dholes, elephants, deer, Wild Oxen, panthers, bears and tigers. There are also cormorants, cranes, ibis, parrots, Green Peafowl, pheasants and wild ducks, and several species of venomous snakes and constrictors. Cambodia is also home to several endangered species, such as the Asian Elephant, Siamese Crocodile, Wild Water Buffalo and Germain's Silver Langur.