Krill
Krill are small, shrimp-like crustaceans that are an important food source for many marine animals, including whales, seals, penguins, and fish. They are found in all the world's oceans and are particularly abundant in the Southern Ocean surrounding Antarctica. Krill are filter feeders, meaning they consume phytoplankton and other small organisms by filtering them out of the water with their feathery legs. They are also an important part of the ocean's carbon cycle, as they consume large amounts of carbon-rich phytoplankton and then excrete carbon-rich waste pellets that sink to the ocean floor.
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