The ocean floor is the last great frontier for the resources sector, but what could be the world's first deep sea gold and copper mine is mired in controversy.
The battlelines are drawn 1.5 kilometres under the Bismarck Sea, off Papua New Guinea.
Canadian miner Nautilus Minerals says risks are low, but locals say it will pollute the water on which they they rely so heavily.
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SBS correspondent Stefan Armbruster reports on an anti-mining campaign that's gaining momentum.
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