Listen to the heartbeat of the blue whale, the world’s largest animal

Listen to the heartbeat of the blue whale, the world’s largest animal

The heart of the Etruscan shrew, one of the world’s smallest mammals, beats incredibly fast — up to 1,500 times per minute, or 25 times per second. The human heart, in comparison, is sluggish, beating only 60 to 100 times a minute. Then there’s the heart of the blue whale, the largest animal ever to …

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