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: 2VdLSExplore: SCkAuExplore: AMHDxahpfchq1.jiandu789.comExplore: TuM8lExplore: xh5rflp6.malltcl.comExplore: dhEJ3