In 2011, Marine biologists produced a baffling discovery—more than one,three hundred approximately great circles scattered over the Mediterranean Sea floor from the Coastline of Corsica. These formations, some sixty seven ft vast, sparked countless theories: were they volcanic craters, WWII bomb scars, or one thing even stranger? In this https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b