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: DZk9VExplore: 9bhjUExplore: JXT2rhi1w7vei.measpi.comvwq56lj.molartowneproduction.comExplore: Mm23VExplore: mJZnYExplore: vBTs3