The Hidden Boundaries of the Lost Continent ‘Zealandia’ Revealed in Incredible Detail


A new ocean mapping expedition is mapping the boundaries of Zealandia, a submerged “lost continent” that is home to New Zealand and the territory of New Caledonia in the South Pacific.

Zealandia separated from the supercontinent Gondwana between 79 and 83 million years ago. With the exception of New Zealand and New Caledonia, this piece of continental crust now sits on the ocean floor. It is not the only chunk of continental crust to break off from a larger continent, but it is the largest at 1.9 million square miles (4.9 million square kilometers). That’s six times the size of the next largest continental fragment, the microcontinent of Madagascar.

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