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Blue whale’s heart beats at 8/10 bpm and is about 1.5 meters long, 1 meters wide, and 1.5 meters tall. It weighs about 180 kg and its heartbeat can be heard from over 2 miles away. Ref: blog.education.nationalgeographic.org/2015/08/31/how-big-is-a-blue-whales-heart/

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