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: RsPCYExplore: 8hu8zExplore: 8f4UpExplore: hiUSWExplore: XWrvNExplore: 0Rq35Explore: 0aP6XExplore: VDR74