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Choose a Page:Can polar bears swim?What is a dugong?*What is the largest animal in the ...*Which whale can dive the deepest?Do whales migrate in winter?What is the difference between a s...Why do walruses have tusks?What is the difference between a d...Which animal is called the sea canary?How did the right whale get its name?Which is the most ferocious sea ma...How does the sea otter eat clams? What is the largest animal in the world? The blue whale is the largest animal that has ever lived on this planet. It can grow to 27 metres long, and weigh 190 tonnes.   Previous: Back Book: Best Ever Q&A Section: Nature Chapter: Sea Mammals