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Krill are small crustaceans native to all oceans of the world. Krill are small shrimp-like creatures usually 1/4 inch to 2 inches in length. Krill are considered near the bottom of the food chain. They eat phytoplankton, single-celled plants that float in the seas near the surface. Krill then become food for fish and other animals that can't eat plants. They are an important food for sea creatures such as baleen whales, manta rays, whale sharks, crabeater seals, and a some seabirds. Most krill travel in large swarms with as many as 10,000 to 60,000 krill per cubic meter. These dense swarms elicit a feeding frenzy among fish, birds and mammal predators. Play the following videos to learn more about the krill.
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