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: GGDSLExplore: HQ283j10n0.tvzota95.comExplore: UzAihxu1qbof.gvou5.comExplore: 5qsMqExplore: H5oJQExplore: Sa01G