In 2011, Marine biologists created a baffling discovery—more than one,three hundred just about excellent circles scattered through the Mediterranean Sea floor off the Coastline of Corsica. These formations, some sixty seven feet huge, sparked many theories: had been they volcanic craters, WWII bomb scars, or some thing even stranger? https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b