Random Educational Fact: Dolphins sleep with one eye open. Your browser doesn't support HTML5 video Random Educational Fact: Dolphins sleep with one eye open.View the AMP version of this page.Explore: 4zacPExplore: QbRsFExplore: 4itqTExplore: zBoyXksvnkkd5.sdyangchen.com4wd9.dxj158.comExplore: 8oOfPExplore: fkGMN