What evolutionary advantage do blue whales gain by being so big? Their tiny food source, krill, holds the key to the answer. This TED-Ed video by Asha de Vos seeks to explain with the entertaining help of puppets and animation.
Watch the video and learn something new today!
The Oceans Are So Polluted That Mother Harbor Porpoises' Milk Is Poisoning Calves: Click “Next” below!
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