![To facilitate genetic transfer between isolated individuals, barnacles have extraordinarily long penises. Barnacles probably have the largest penis to body size ratio of the animal kingdom." : r/pics To facilitate genetic transfer between isolated individuals, barnacles have extraordinarily long penises. Barnacles probably have the largest penis to body size ratio of the animal kingdom." : r/pics](https://external-preview.redd.it/btgM0Q-y3f4Zq0eueyAg4mPVtx_7pB9sFvhR0tBHOMs.jpg?auto=webp&s=8090457968d0084ed916fd958f7e84f13d37fb4a)
To facilitate genetic transfer between isolated individuals, barnacles have extraordinarily long penises. Barnacles probably have the largest penis to body size ratio of the animal kingdom." : r/pics
![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)
1 Reproductive behaviour of barnacles. In some species the penis length... | Download Scientific Diagram
![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/7dd548fe-9bfd-4933-8c6c-eb127efd342f/1081fig5.jpg)