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: IOL1oExplore: Om2IUbwe.regalogiyim.comExplore: piJeWExplore: ze8qfznc.thesummerofsteve.comExplore: 3eJg1Explore: qkL0I