(3) Various underwater crop circles are found as the males do not use the same circle for more than once for the mating purpose. The underwater patterns are being maintained by the male puffer fish till the time the mating process is done. Once the mating is over and the eggs are hatched, the fishes would abandon the patterned nest and move on to building a new one.
(4) Researchers who have studied the work of puffer fish have it recorded with them that the males take about seven to nine days to finish each underwater crop circle. They create the circles by constantly swimming and an out of the circles while they dig the valleys in the sandy floor with the fins.
(5) As per researchers, the aesthetics of the circular patterns are very important as that would decide on whether the female puffer fish would agree to get into a mating session with the male or not. The male fishes are found to decorate the peaks of the circular patterns with fragments of shells and corals.
People who had tried to describe the underwater crop circles with activities involving the aliens would need to understand that there is zero involvement of anything extraterrestrial behind the creation of the underwater crop circles. These circular patterns that are about six to eight feet wide are nothing but the artistic work of the puffer fishes so that they can attract a female fish and mate with her and these fishes pretty much belong from the earth only.