Tanzania boasts 16 national parks and is home to a large variety of animal life. Among the large mammals include the Big five, cheetahs, wildebeest, giraffes, hippopotamuses and various antelopes. Tanzania's most well known wildlife attractions are located in the northern part of the country and include the Serengeti National Park, Tarangire National Park and Lake Manyara National Park. The Serengeti National park encompasses the world-famous great migrations of animals.
The north is also home to the Ngorongoro Conservation Area. The Ngorongoro Conservation Area includes the Ngorongoro Crater, which is an extinct volcanic caldera with lions, hippopotamus, elephants, various types of antelope, the endangered black rhinoceros, and large herds of wildebeest and zebra. The Crater also holds the Olduvai Gorge, it is considered to be the seat of humanity after the discovery of the earliest known specimens of the human genus, Homo habilis as well as early hominidae, such as Paranthropus boisei.
The western part of Tanzania includes the Mahale, Katavi, and Gombe national parks, the latter of which is the site of Jane Goodall's ongoing study, begun in 1960, of chimpanzee behaviour. The country is also particularly rich in plant diversity, the Tanzania National Parks Authority has an entire national park the Kitulo National Park dedicated to flowers. There is a wide variety of biomass across the nation.