Addo Elephant National Park is a diverse wildlife conservation park situated close to Gqeberha in South Africa and is one of the country's 20 national parks. It currently ranks third in size after Kruger National Park and the Kgalagadi Transfrontier Park. History The original section of the park was founded in 1931, in part due to the efforts of Sydney Skaife, in order to provide a sanctuary for the eleven remaining elephants in the area. The park has proved to be very successful and currently houses more than 600 elephants and a large number of other mammals. Expansion The original park has subsequently been expanded to include the Woody Cape Nature Reserve that extends from the Sundays River mouth towards Alexandria and a marine reserve, which includes St. Croix Island and Bird Island, both breeding habitat for gannets and penguins, not to mention a large variety of other marine life. Bird Island is home to the world's largest breeding colony of gannets - about 120,000 birds - and also hosts the second largest breeding colony of African penguins, the largest breeding colony being St. Croix island. These marine assets form part of the plan to expand the 1,640 km² Addo National Elephant Park into the 3,600 km² Greater Addo Elephant National Park. The expansion will mean not only that the park contains five of South Africa's seven major vegetation zones (biomes), but also that it will be the only park in the world to house Africa's "Big 7“ (elephant, rhinoceros, lion, buffalo, leopard, whale and great white shark) in their natural habitat. Flora and fauna The flora within the AENP is quite varied, and like all plant life, is a central factor to the ecological system in place. Several species of rare and endemic plants, particularly succulent shrubs and geophytes are native to the South African region within the AENP. Many species are under environmental pressure, however, and are facing possible extinction. The park is home to more than 600 elephants, 400 Cape buffaloes, over 48 endangered black rhinos (Diceros bicornis michaeli) as well as a variety of antelope species. Lion and spotted hyena have also recently been re-introduced to the area. The largest remaining population of the flightless dung beetle (Circellium bacchus) is located within the park. Extinction and overpopulation Two major environmental issues facing the AENP: extinction and overpopulation, which are interrelated. Since the AENP's original mission was