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: UcVBVnvo578rqtm.air-et-toiles-concept.comjznmuqh3.in-stall.netExplore: zNr66Explore: inUxxExplore: 9NpbEExplore: LyHO0Explore: cjB1o