For the First Time, Scientists Record the Slow Beat of a Blue Whale's Heart

The largest heart on earth — a 400-pound blood-pumping machine — beats about 13 times a minute. That’s according to scientists' first recordings of the heart of a blue whale. The research team documented the rhythms thanks to a few suction cups that kept a heart rate monitor attached to a whale swimming and diving around California's Monterey Bay.
Read more: https://www.discovermagazine.com/planet-earth/first-recording-of-a-blue-whales-heart-shows-ultra-slow-heartbeat?source=Snapzu