Southern Ocean Southern Hemisphere, with the greatest concentration located on and around Antarctica. Four of the 18 penguin species live and breed on the mainland and its close offshore islands. Another four species live on the subantarctic islands. Emperor penguins have four overlapping layers of feathers, keeping them warm. They are the only Antarctic animal to breed during the winter. There are relatively few fish species in few families in the Southern Ocean. The most species-rich family are the snailfish (Liparidae), followed by the cod icefish (Nototheniidae) and eelpout (Zoarcidae). Together the snailfish, eelpouts and notothenioids (which includes cod icefish and several
Southern cassowary occurrence range of , and between 10,000 and 20,000 birds were estimated in a 2002 study, with between 1,500 and 2,500 in Australia. Southern cassowaries have been bred in many zoos around the world, like at White Oak Conservation in Yulee, Florida, United States. Southern cassowary The southern cassowary ("Casuarius casuarius"), also known as double-wattled cassowary, Australian cassowary or two-wattled cassowary, is a large flightless black bird. It is a ratite and therefore related to emu, ostrich, and the "Rhea" and Kiwi genera. (See also dwarf cassowary and northern cassowary.) Presently, most authorities consider the southern cassowary monotypic, but several