The creators of a floating community planned for French Polynesia hope the project will eventually lead to hundreds of new islands for people at risk from rising seas.
French Polynesia signed a deal with the US based Seasteading Institute to collaborate on the pilot project earlier this month.
The institute's Executive Director Randolph Hencken says the eventual plan is for a thousand floating cities on the ocean.
But he told Sally Round the pilot will involve just a few dozen people on platforms in the Tahiti lagoon.
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A floating city project design by The Seasteading Institute. Photo: Supplied / The Seasteading Institute