In 2011, Marine biologists created a baffling discovery—in excess of 1,three hundred nearly ideal circles scattered across the Mediterranean Sea ground off the Coastline of Corsica. These formations, some 67 feet large, sparked countless theories: ended up they volcanic craters, WWII bomb scars, or a thing even stranger? In https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b