Mark here either has poor reading comprehension, or is intentionally being a little shit by cherry picking part of the title and not reading the whole thing.

The location specified is not 'north of Antarctica'.

It is, 'the Weddell Sea, north of Antarctica.'

Giving 'the Weddell Sea' as the location is actually decently specific, and the 'north of Antarctica' that follows is modifying / adding to the description of 'the Weddell Sea'... not the entirety of the location description.

I would snarkily, rhetorically, ask if people are even taught how to diagram out a sentence structure anymore, but I already know the answer is 'not really, no', because the average adult American literacy level is that of a 6th grader.

Mark, and anyone else who also finds this to be a funny, poignant zinger, need to go back to middle school and relearn grammar.