Lake Turkana National Park comprises of Sibiloi National Park, the South Island and Central Island National Parks covering an area located within the Lake Turkana basin, whose total surface area is 7 million hectares. The lake is surrounded by an arid, seemingly extraterrestrial empty landscape devoid of life. There are numerous volcanic overflows with petrified forests. The island parks are breeding habitats for Nile crocodiles, hippopotamus and several snake species. It is believed that the lake was much larger than it is today, supporting a richer and more varied flora and fauna. Yet, today there are around 400 species of birds and some 200 – 300 Kg Nile perch, making it a fantastic place for sport fishing and birding.