Generally, the Southern Ocean separates these two continents.
what separates the south America from Antarctica
Nothing: Antarctica is in full possession of its coast.
You can find Antarctica south of Australia.
Antarctica is larger than Australia. Australia is the smallest continent.
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Antarctica and Australia. Australia and antarctica
Australia is located northwest of Antarctica.
Bass Strait separates the mainland of Australia from Tasmania
Australia does not own Antarctica: it is owned by no country.
There are no countries in Antarctica, and Australia is a country itself.
Water seperates the two.