|Area||20.327 million sq km|
|Lowest Point||-7,235 m (South Sandwich Trench)|
The Southern Ocean was defined by the International Hydrographic Organization in 2000 through a vote of member states. It extends from Antarctica to 60 degrees S latitude, a border chosen to include the Antarctic Circumpolar Current.
Most Australians consider the Southern Ocean to extend further north than the official definition, to meet the south coast of Australia.