Octopus, probably Pareledone
A sucker for travel: Octopuses are abundant around Antarctica, and they are spreading. These leggy creatures have expanded their territory far beyond the island continent, riding oxygen-rich, freezing waters that sink from the Antarctic sea surface down to the deeps. The life-supporting waters fan out into surrounding seas, and animals can follow the corridor.
The Southern Sea feeds into the Pacific, the Atlantic, and the Indian oceans, providing food and life to oceans around the world.
Photographs by Andy Biggs