Nearly all of Antarctica’s iconic wildlife, from penguins to seals and whales, depend on krill, tiny crustaceans that make up ...

Adélie penguins (Pygoscelis adeliae) (Image Credit: Nicole Hellessey) Krill are a keystone species in Antarctica and, unfortunately for them, they reside near the bottom of the food chain.

The foul stench of penguin poop sets Antarctic krill on edge. In lab experiments, the mere scent of penguin droppings — or guano — sent krill scrambling for escape, researchers report March 20 in ...

Krill forms the base of the food chain, and may be at risk as well, explained Watters. “Climate change is a major force in that region, and is creating big changes in the (Antarctic Peninsula ...