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Which seas separate Australia from Indonesia?
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The primary body of water separating Australia from Indonesia is the Timor Sea. This arm of the Indian Ocean is situated northwest of Australia and southeast of the Indonesian island of Timor.1
Additionally, the Arafura Sea lies between the north coast of Australia and the southern coast of New Guinea, which includes parts of Indonesia. The Arafura Sea merges with the Timor Sea to the west, forming part of the maritime region between the two nations.21