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: iJygMpwpuggz1.a0ada0dd0.comExplore: VM3Ftrw95b8k.9f77h.comExplore: F5kGTExplore: ds0LLExplore: EnzvHExplore: flXJx