Which marine species forms the largest known animal migration in the world?
Quick Answer
The Antarctic krill is part of one of the largest animal migrations on Earth. Swarms can move vertically every day and occur in enormous numbers across the Southern Ocean.
The Full Story
Antarctic krill are among the most abundant animals on the planet and are central to one of the largest biological movements in the ocean. Their daily vertical migration can involve huge numbers rising and sinking through the water column. Entire populations are distributed across the Southern Ocean, where they support whales, seals, penguins, and seabirds. Because of their sheer abundance and ecological importance, krill are often described as a keystone species of the Antarctic marine food web.
Key Facts
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