Blue Whales In-Depth The largest animal ever to have lived, the blue whale is a marvel of bone and blubber, blowholes and baleen?in immense proportions. The graceful giants live in every ocean around the world, reaching their mind-boggling dimensions with a diet made up entirely of tiny krill. Explore blue whales' size, weight, and behavior then learn what is threatening their survival. Explore the Blue Whale »
Behind-the-scenes interviews. Watch Video
Read About the Blue Whale Journey
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National Geographic Maps Oceans
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