Oceanic marvels revealed in the Census of Marine Life's latest report contain a discovery that the ancestor of several world's deep-sea octopuses is still alive! It is a shallow-water octopus called Megaleledone setebos, which is simply found in the icy Southern the deep.

Octopuses it seems that spread around the world after Antarctica became roofed with a continent-wide ice sheet further than 30 million years ago, a move that helped create oxygen-rich ocean currents graceful north. Sea ice forms, freshwater freezes, parting high-salinity, high-oxygen water, which is denser and sinks, elegant into the ocean deeps. Themohaline superhighway pierced the oxygen-less the deep underneath as well as the octopuses motivated out beginning the Antarctic eager on deeper water. The octopuses adapted to the new marine environment. For example, in the rear ink sacs because there was no need for this defense method in the pitch black waters.