Science

Are whales mammals or fish?


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Whales are mammals. They breathe air and give live birth.

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Whales, dolphins, porpoises, seals, walruses, and many other marine animals are mammals, not fish. The marine mammals exist because about 50 to 60 millions of years ago, some mammals wandered off of the land and into the ocean, and there they evolved into different types of marine mammals.

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