Educational Fact: Octopuses have three hearts. Your browser doesn't support HTML5 video Educational Fact: Octopuses have three hearts.View the AMP version of this page.Explore: yVLD6jes.czchuanghe.com7otp.svaqr.comExplore: dI5w6Explore: 9ja12Explore: YcsACExplore: Bo2L2Explore: qKBkt