New continent discovered

Yes, a new continent, no, not Atlantis.  The youtube podcast, "What da math?" is mainly an astronomy podcast, but one episode the host (good Russian name, I momentarily can't remember though), from Toronto talked about a new continent called Zealandia, which is mainly underwater, but sticks up in New Zealand and New Caledonia.  But, the discovery does have political ramifications, because ownership of nations goes out to the continental shelf.  This is not just an extension of the Australian continent.

National boundaries go out into the ocean a certain distance _or_ to the continental shelf.  This discovery means more national territory for New Caledonia and New Zealand, albeit underwater.  That probably means exclusive fishing rights.  So, yes, it is worth it to look at the oceanic geography for New Zealand and New Caledonia, they do stand to benefit.

I think Chile claims a 200 mile limit.  But, just because there are conflicts in practice does not mean that there are not internationally recognized standards.  I think this would be a case where other nations would honor (in general) a claim, so that their claims are honored.  But, I am not an international law lawyer, so I really do not know.