By Bobby Bascomb Nearly all of Antarctica’s iconic wildlife, from penguins to seals and whales, depend on krill, tiny ...

A keystone prey species in the Southern Ocean is retreating towards the Antarctic because ... penguins and fur seals may be finding it harder to get enough of the krill to support their populations.

Although they breathe air, seals are most at home in the water and may stay at sea for weeks at a time eating fish, squid, birds, and tiny shrimp-like krill. Fur seals may swim by themselves or ...