In 2011, Marine biologists built a baffling discovery—more than 1,300 practically best circles scattered over the Mediterranean Sea flooring from the coast of Corsica. These formations, some 67 feet vast, sparked many theories: ended up they volcanic craters, WWII bomb scars, or a little something even stranger? In this https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b