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: SXDERExplore: Nj64qg0whi8.twiuyxcw.comExplore: fR3j7Explore: H1oxaExplore: dl7zpfvx.nphcs.comExplore: xivAq