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: UXHIBExplore: RUWMyExplore: PmBX4Explore: ikvHQExplore: rUWH7Explore: 0pyjeExplore: 6fFBJExplore: BISyU