Zealandia is narrow microcontinent that is almost entirely submerged in the South Pacific Ocean. It is said to have broken away from Antarctica some 100 million years ago and then from Australia about 80 million years ago.
Only 7 per of Zealandia is not submerged under the ocean. Most of the terrestrial land makes up islands of the country of New Zealand – the North Island and South Island. The other parts of Zealandia includes Stewart Island (located south of the South Island) and many small islets. The northern most tip of Zealandia is New Caledonia – a group of islands administered by France.