In 2011, Marine biologists produced a baffling discovery—around one,three hundred nearly best circles scattered over the Mediterranean Sea flooring off the Coastline of Corsica. These formations, some sixty seven ft vast, sparked plenty of theories: ended up they volcanic craters, WWII bomb scars, or a little something even stranger? https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b