Australia (continent)

In geology, Australia (also called Australia-New Guinea, Sahul, Meganesia, Greater Australia, Australasia, or Australinea) is a continent comprising (in order of size) the Australian mainland, New Guinea, Tasmania, and intervening islands, all of which sit on the same continental shelf. These landmasses are separated by seas overlying the continental shelf — the Arafura Sea and Torres Strait between Australia and New Guinea, and Bass Strait between mainland Australia and Tasmania.
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