5. A blue whale’s heart is the size of a small car
The blue whale is the largest mammal on earth, and its heart is massive. It weighs an average of 1,000 pounds and is the size of a small car.
The blue whale’s heart beats just nine times a minute, and each beat is so powerful we can feel it from over 50 feet away.
Additionally, the blue whale’s aorta, which carries blood from its heart to the rest of its body, is so big that a human could swim through it.
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