Fishy crop circles
These images although they look like underwater crop circles or something from another planet, are images from the sea bed 80 feet below off the coat of Japan, they were discovered by underwater photographer Joji Ookata .
He discovered a mysterious 6.5 ft. wide circle precisely carved from sand. Joji decided to come back with a TV crew to figure out this strange phenomenon.
The cameras revealed that the culprit was a few-inch long pufferfish, creating the sand sculptures by swimming tirelessly and using its single fin. The team figured that this is how the female fish attract the males, and the centre of the circle is where the eggs are laid. The riffles then serve as a protective buffer against ocean currents. In fact, the more riffles a fish makes, the more chances it has to find a partner.