Bloom conceded that the question of permanence is on the table.
"A large number of countries have taken the view that there should be a ‘sunset clause', so that at a certain point the MPA would end and then the commission would have to take a decision as to whether it continues," he explained. "Now, both our position and New Zealand's position is that we strongly prefer an MPA that continues in perpetuity, but given the fact that a significant number of members apparently think otherwise, it's going to have to be an issue for negotiation."
In a statement on Monday, Kavanagh dubbed the new proposal is "a significant retreat from U.S. Secretary of State John Kerry's commitment earlier this year to protect the Ross Sea, one of the most pristine areas left on Earth."
Bloom disagreed and asked for critics to understand the rationale behind the changes.
"I think that our proposal needs to be seen as a good-faith effort to promote the success of the negotiations," he said. "It's by no means running in the opposite direction. It really is an attempt to find a way forward. And in order to do that, in an organization that works on the basis of consensus, you have to take into account the science and you have to take into account what other members are saying. So we think this is a necessary step at this point to try to get agreement on a meaningful MPA."