In 2011, Marine biologists created a baffling discovery—in excess of one,300 nearly great circles scattered throughout the Mediterranean Sea ground off the coast of Corsica. These formations, some sixty seven feet extensive, sparked a great number of theories: were being they volcanic craters, WWII bomb scars, or a thing https://medium.com/@perfectseoservice2017/the-thriller-of-one-three-hundred-best-circles-on-the-mediterranean-seafloor-science-unveils-the-f6327a72d07b