Antarctic Ocean, Austral Ocean, Southern Ocean

National Geographic recognizes the Southern Ocean, with its northern limit at 60° south latitude. Do not use Antarctic Ocean or Austral Ocean to refer to the Southern Ocean. 

There is international agreement that the icy waters around Antarctica form a fifth distinct region. While there is no consensus on its name or its extent, most countries call it the Southern Ocean and use 60° south latitude as an approximation of its northern limit.

See also: Antarctic Convergence, Antarctic Polar Front, OCEANS.