Hungry penguins chase Antarctic’s shifting krill

A Gentoo penguin is seen next to a cross that stands as a memorial to three British Antarctic Survey scientists who disappeared in the early 1980s, on Petermann Island in Antarctica. -AFP

PETERMANN ISLAND, Antarctica: Waddling over the rocks, legions of penguins hurl themselves into the icy waters of Antarctica, foraging to feed their young.

Like seals and whales, they eat krill, an inch-long shrimp-like crustacean which forms the basis of the Southern Ocean food chain.