The most extraordinary display of all is created by a tiny, drab male pufferfish. He builds a spectacular submarine 'crop circle' in the sand. It's the most perfect and complex structure created by any animal. The crop circles were only discovered in southern Japan in 1995 and the fish architect was only identified in 2011.

The Pufferfish (order of Tetraodontiformes) has a truly majestic kind of courtship, creating a massive ‘mandala’ on the sea floor with its fins. This project takes nearly a week of non-stop effort in which it works day and night. The result is evocative. Please enjoy this short video on an incredibly artistic fish.