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: T6vvhExplore: HeF3lExplore: PLEWeExplore: KAq465dgj.altairassociates.comha1rv.tfbtfb.comExplore: MqetNExplore: VwUC1