In 2011, Maritime biologists manufactured a baffling discovery—about one,300 nearly ideal circles scattered over the Mediterranean Sea ground off the coast of Corsica. These formations, some 67 feet large, sparked plenty of theories: have been they volcanic craters, WWII bomb scars, or some thing even stranger? During this video https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b