![Dustin Growick 🦖 on Twitter: "Ya know, just FYI, relative to body size, the barnacle has the largest penis in the animal kingdom. @SAMuseum https://t.co/MuTOcvUFK1" / Twitter Dustin Growick 🦖 on Twitter: "Ya know, just FYI, relative to body size, the barnacle has the largest penis in the animal kingdom. @SAMuseum https://t.co/MuTOcvUFK1" / Twitter](https://pbs.twimg.com/media/DMYoKXHUEAAUdPg.jpg)
Dustin Growick 🦖 on Twitter: "Ya know, just FYI, relative to body size, the barnacle has the largest penis in the animal kingdom. @SAMuseum https://t.co/MuTOcvUFK1" / Twitter
![Precisely proportioned: intertidal barnacles alter penis form to suit coastal wave action | Proceedings of the Royal Society B: Biological Sciences Precisely proportioned: intertidal barnacles alter penis form to suit coastal wave action | Proceedings of the Royal Society B: Biological Sciences](https://royalsocietypublishing.org/cms/asset/6142997a-4450-4d8f-a94b-0b5e8e1e0297/1081fig3.jpg)
Precisely proportioned: intertidal barnacles alter penis form to suit coastal wave action | Proceedings of the Royal Society B: Biological Sciences
![1 Reproductive behaviour of barnacles. In some species the penis length... | Download Scientific Diagram 1 Reproductive behaviour of barnacles. In some species the penis length... | Download Scientific Diagram](https://www.researchgate.net/publication/282700669/figure/fig1/AS:395312012251136@1471261136246/Reproductive-behaviour-of-barnacles-In-some-species-the-penis-length-of-barnacles-can.png)