Never say they are fish because whales are mammals like a human. Size does matter for all whales. They spend their whole life in the ocean and sea. One type of whale has its teeth, but not for the other. However, non-toothed whales can survive with their baleen, a specific system of them. Can't believe it, whales need a huge lot of their diet each day. With large and sturdy shapes, most whales are such good swimmers and divers. Some can dive into thousands of meters for feeding with only one breathing. And some can spring themselves over the surface. Naturally, whales are docile. It is one reason for being hunted by whalers for utilities since earlier centuries. If they are not threatened, whales can live as long as the human lifespan or more extended. With international conservation, some species of whale are still seen in the oceans nowadays. Let come to see this book to know how the giant creatures look like
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