Everybody has seen crop circles, but in 1995, divers discovered them underwater.

Divers discovered beautiful circular patterns, measuring about seven feet in diameter, in the seafloor off of Japan's coast, with more of the strange formations being discovered nearby. They were immediately compared to the mysterious crop circles of lore, and were seen frequently for at least ten more years before anybody had any idea what caused them.

It has recently been discovered that the creator of these beautiful underwater crop circles are none other than the pufferfish.

A newly discovered species of pufferfish is revealed to have been the artist behind these underwater crop circles; studies show that the small pufferfish create the beautiful, ornate circular patterns to attract mates. The males flap their fins, dragging themselves around the seafloor, which results in the disruption of sediment and the creation of beautiful patterns. It is an amazing feat, considering that the fish are merely 5 inches long, their works of art up to seven feet across. When the circles are done, females come to do an inspection, and circle they like best gets mating rights. However, nobody knows as of yet what the female's standards for a good circle is.

Mating has the females lay the eggs in the middle of the circles, then to have the males fertilize them externally. The females leave soon after, and the males stay to guard the eggs until they hatch.

The geometric patterns have three distinct features: first is that there are "radially aligned ridges and valleys" outside of the nest; second the male then decorates the ridges with shell fragments. Third, the male pufferfish gathers fine sediments that give the circles their own distinctive coloring and look.

But apparently there is a function to this pufferfish's art form.