Japanese photographer and scuba diver Yoji Ookata stumbled upon rippling geometric sand patterns nearly six feet in diameter at almost 80 feet below sea level when he was diving in southern Japan. Dubbed the “The Mystery Circle” after a TV crew went down to take a look and make a documentary, many suggested the circular patterns were created by UFOs. It was later discovered that the intricate circle was actually the creation of a little fish, the Japanese puffer. Apparently, the little puffer does this as part of its mating ritual and as a protective barrier for its eggs. Chalk one up for nature.