New Zealand has reiterated calls to protect waters south of the country from overfishing ahead of an anticipated setback next week.
The pressure was not from countries anywhere near Antarctica - but largely from Russia.
A commission had been working for eight years to establish marine protected areas, or MPAs, in Antarctic waters to protect species including the toothfish.
New Zealand's Opposition and Government both called for global recognition of the Antarctic's ecological importance this week. Yet even with powerful international allies backing New Zealand's position, plans for the reserve could be thwarted again.
The next round of talks at the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) will be held in Hobart next week. The commission made decisions by consensus and, without a breakthrough, the reserve could be delayed indefinitely.