I've never been in favor of overfishing, but in this case...

... get all the crab legs that you can! King crabs are becoming invasive and destructive species in Antarctica. Getting them might be difficult (worse seas than the Bering and North Pacific), but hey, when has that ever stopped anybody from overfishing?

King Crab Distributions Limited by Temperature in the Southern Ocean

King Crabs Threaten Seafloor Life Near Antarctica

King Crabs Invade Antarctica