Last updated 6 years ago
The Ozone Hole
Krill often are referred to as “keystone” species because they play such an important role for many marine systems.Krill, a Norwegian whaling term meaning "small fry", Krill are one of the most important elements in the Antarctic food chain. They feed on microscopic plants (phytoplankton) that float around the Southern Ocean. The krill, in turn, then become the basic food for baleen whales, seals, penguins and many seabirds.