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How big is a blue whale heart?

The heart in the picture above is obviously a replica, but a real blue whale heart weighs roughly 1,300 pounds; its heartbeat can be detected from two miles away and a human can fit in its arteries.

By Robert Quigley, and as found on The Mary Sue

Blue whale heart size is massive! Interested in seeing them in San Diego? Book a whale watching cruise with Hornblower.

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