This is an ambiguous question, there are multiple bodies of water south of Australia, so you should try looking on a MAP before asking this kind of question.
South of Victoria and north of Tasmania is Bass Strait;
South-east of New South Wales is the Pacific Ocean; and
Directly south of the Great Australian Bight (South Australia) is the Southern Ocean.
The Southern Ocean is south of Australia.
Although many refer to it as the Southern Ocean, the ocean immediately south of Australia is the Indian ocean. The Southern Ocean extends from the coast of Antarctica to the 60 degree South line of Latitude.
The Pacific Ocean is east of Australia. The two arms of the Pacific Ocean which border Australia's east are the Tasman Sea and the Coral Sea.
The body of water that lies South of Australia is the Southern Ocean.
The Indian Ocean lies west of Australia and Indonesia.
The Timor Sea lies northwest of Australia and southwest of Indonesia.
The Indian Ocean
The Southern Ocean is south of Australia.
The Indian Ocean lies to the south and west of Australia.
The Southern Ocean to the south and the Indian Ocean to the west.
coral sea
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The body of water west of Greenland is called the Baffin Bay.
Australia and Ireland are on opposite sides of the globe, so no body of water connects them.
The body of water which separates the island state of Tasmania from mainland Australia is Bass Strait.
The body of water which separates the island state of Tasmania from mainland Australia is Bass Strait.
The state is Tasmania and the body of water separating Tasmania from mainland Australia is Bass Strait.
The major body of water located in the west of Chile is the Pacific Ocean. (Chili is not a country).
Sydney Harbour itself is the biggest body of water in Sydney.
The Pacific Ocean is west of Canada.