An Antarctic lobby group, backed by major conservation groups and celebrities, is calling for a massive marine reserve in the Ross Sea as part of an even bigger reserve surrounding Antarctica.
It would include a substantial proportion of New Zealand's dependency area of the Ross Sea, extend out to 60 degrees south and be comparable to the area of Australia.
The Antarctic Ocean Alliance (AOA) today launched its first report calling for 3.6 million square kilometres of fully protected marine reserve.
It would also be one of 19 areas in the Southern Ocean around Antarctica to form the world's largest nature reserve, protecting the nearly 10,000 unique species found in the freezing environment.
The ban on fishing and development would cover most of the area where Patagonian toothfish is now fished.