Antarctic krill
"P. glacialis" is known to feed on many crustaceans, fish, lanternfish, Antarctic krill, and Antarctic silverfish, and has been known to practice cannibalism. Animals known to routinely feed on glacial squid include the Antarctic petrel, light-mantled sooty albatross, Ross seal, southern elephant seal, Weddell seal, Patagonian toothfish, wandering albatross, grey-headed albatross, the Adélie penguin and the emperor penguin.