The blue whale, the largest animal on Earth, is full of jaw-dropping facts—but perhaps the most astonishing of all is the sheer size and weight of its heart. A blue whale's heart weighs a staggering 400 pounds (180 kilograms) on average, about the size of a small car!
This massive organ pumps blood throughout its enormous body, allowing the whale to thrive in the deep ocean. To put it into perspective:
- The heart is so large that a human could crawl through its arteries!
- With each beat, the blue whale’s heart pumps 10 gallons (38 liters) of blood.
- Despite its colossal size, the heart beats at a slow rate—typically around 5 to 6 beats per minute when diving, but it can increase to about 25-37 beats per minute when at the surface.
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