Pufferfish create these intricate geometric mounds to attract mates. Here is the paper concerning the study. http://www.nature.com/srep/2013/130701/srep02106/full/srep02106.html Nature never stops being awesome.
That is pretty awesome. So if a puffer fish gets pissed off and tells another puffer fish, "eat me!" Does that mean it is telling it to die?
It's amazing how often circular patterns show up in nature. Just Google "math nature" and look at all the incredible images.
sacre merde! this flashed an image in my head of crop circles being created by alien pufferfish, from their geometrically-designed flying saucers... thanks for solving that mystery, wrey!