Horn of Africa periodic monsoon winds and irregular rainfall. Mean daily maximum temperatures range from , except at higher elevations along the eastern seaboard, where the effects of a cold offshore current can be felt. Somalia has only two permanent rivers, the Jubba and the Shabele, both of which begin in the Ethiopian Highlands. About 220 mammals are found in the Horn of Africa. Among threatened species of the region, there are several antelopes such as the beira, the dibatag, the silver dikdik and the Speke's gazelle. Other remarkable species include the Somali wild ass, the desert warthog, the hamadryas baboon, the Somali
Fauna of South Africa in 1938 when one was caught off the eastern coast of the country. A population exists in iSimangaliso Wetland Park, Kwazulu-Natal. The Oligochaeta fauna is represented by over 140 species of the families Acanthodrilidae, Enchytraeidae, Eudrilidae, Haplotaxidae, Microchaetidae and Tritogeniidae. Coleoptera Beetles are among best studied South African insect groups and include a number of endemic species. Lepidoptera Diptera The flies native to South Africa have been classified into over 90 families. Hymenoptera Poaching of rhinoceroses has become a national issue for South Africa. In 2015, 1175 rhinos were killed for their horn, which is an ingredient in traditional Chinese