![The Japanese pufferfish makes 'crop circles' in the sand as part of their mating ritual. They are geometric circles, completely symmetrical, and if the female approves, they'll mate. : r/Awwducational The Japanese pufferfish makes 'crop circles' in the sand as part of their mating ritual. They are geometric circles, completely symmetrical, and if the female approves, they'll mate. : r/Awwducational](https://i.redd.it/ods9b1ytpek61.jpg)
The Japanese pufferfish makes 'crop circles' in the sand as part of their mating ritual. They are geometric circles, completely symmetrical, and if the female approves, they'll mate. : r/Awwducational
![Geosciences | Free Full-Text | A Fluid Dynamics Approach for Assessing the Intelligent Geomorphic Design of the Japanese Pufferfish Nest | HTML Geosciences | Free Full-Text | A Fluid Dynamics Approach for Assessing the Intelligent Geomorphic Design of the Japanese Pufferfish Nest | HTML](https://www.mdpi.com/geosciences/geosciences-11-00022/article_deploy/html/images/geosciences-11-00022-g001.png)
Geosciences | Free Full-Text | A Fluid Dynamics Approach for Assessing the Intelligent Geomorphic Design of the Japanese Pufferfish Nest | HTML
![zoology - What exactly is this small puffer fish doing and how did it manage to accomplish such a feat? - Biology Stack Exchange zoology - What exactly is this small puffer fish doing and how did it manage to accomplish such a feat? - Biology Stack Exchange](https://i.stack.imgur.com/96Gsr.gif)