In 2011, Marine biologists created a baffling discovery—above one,300 almost great circles scattered over the Mediterranean Sea floor from the Coastline of Corsica. These formations, some sixty seven ft wide, sparked many theories: have been they volcanic craters, WWII bomb scars, or a little something even stranger? With this https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b