In 2011, Marine biologists made a baffling discovery—around 1,three hundred practically ideal circles scattered over the Mediterranean Sea floor off the Coastline of Corsica. These formations, some 67 toes large, sparked numerous theories: were being they volcanic craters, WWII bomb scars, or a thing even stranger? With this video, https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b