The National Oceanic and Atmospheric Administration gave a statistic that 95% of what's deep underwater on Earth has yet to be seen by human eyes. Since he was 21 years old, Japanese photographer Yoji Ookata has dedicated his life to researching and exploring underwater terrain off the coast of Japan.
After seeing rippling geometric six feet wide sand patterns at 80 feet below sea level, he got a crew of cameramen together and made an awesome discovery. Turns out that the crop circles were made by a small puffer fish. The female puffer fish are attracted to the hills and valleys within the sand, where they look for a mate to lay eggs at the center of the crop circle with. The grooves of the circles protect the offspring from the ocean currents.
A little bit of curiosity goes a long way.