How Krill Survive in Antarctica
In How Krill Survive in Antarctica, narrator Sir David Attenborough explains how Antarctica is different from the Arctic and how Antarctica changes in winter and summer. Learn how krill survive under the Antarctic ice. This video is excerpted from BBC’s Blue Planet, a definitive documentary series diving into the mysterious depths of the sea to discover the natural history of the world’s oceans and the rarely seen marine life that reside there.
Lesson Express
Q: How does Antarctica get larger in size during the winter months?
A: Ice freezes along the coasts and extends outwards for hundreds of miles, making the continent double in size.
Q: What do the krill eat all winter?
A: The krill eat algae under the ice.
Q: How do the krill conserve energy during the winter?
A: The krill conserve energy by shrinking in size and reverting back to their juvenile form.
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