Japan's crop circle was not the work of a UFO or other unexplained phenomena. In fact, there is a perfectly scientific explanation for the beautiful patterns discovered underwater, and it has nothing to do with UFOs. The circular indentations in the sand were made by a single male pufferfish.

According to information made available on Sept. 20, 2012, an impressive underwater crop circle that was spotted off the coast of the southern Japanese island of Anami Oshima presented a mystery to the man who found it, diver and underwater photographer Yoji Ookata. According to Kozmedia News, Ookata had been exploring the ocean for five decades, and this was the first time he ever saw anything like it. He photographed the six and a half foot wide structure, but couldn't identify its origins. Fortunately, a film crew discovered the secret behind the Japan crop circle, which was actually constructed from sand and small seashells, not crops.