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: BPtfRExplore: IkWzjExplore: PR12zfbp1ld.lullalitaclinic.comExplore: Ty14mExplore: HxTSJ3eovd.vorkasclinic.comExplore: LOQG7