![Maris Wicks on Twitter: "#mermay : barnacle edition: part two Fun fact: Barnacles have the largest penis to body size ratio in the animal kingdom. https://t.co/qPODnwSRkL" / Twitter Maris Wicks on Twitter: "#mermay : barnacle edition: part two Fun fact: Barnacles have the largest penis to body size ratio in the animal kingdom. https://t.co/qPODnwSRkL" / Twitter](https://pbs.twimg.com/media/DeiU8kIXkAArjzJ.jpg:large)
Maris Wicks on Twitter: "#mermay : barnacle edition: part two Fun fact: Barnacles have the largest penis to body size ratio in the animal kingdom. https://t.co/qPODnwSRkL" / Twitter
![CSIRO on Twitter: "#4oclockfact Barnacles have the largest penis-to-body ratio in the animal kingdom. ^NG https://t.co/uG33zPXCrr" / Twitter CSIRO on Twitter: "#4oclockfact Barnacles have the largest penis-to-body ratio in the animal kingdom. ^NG https://t.co/uG33zPXCrr" / Twitter](https://pbs.twimg.com/media/DfINxw_VMAAbb6j.jpg)
CSIRO on Twitter: "#4oclockfact Barnacles have the largest penis-to-body ratio in the animal kingdom. ^NG https://t.co/uG33zPXCrr" / Twitter
![TIL the Argentine Lake Duck has the longest penis to body ratio of any vertebrate. The 8 inch duck has a 17 inch penis. If humans had this ratio, the human penis TIL the Argentine Lake Duck has the longest penis to body ratio of any vertebrate. The 8 inch duck has a 17 inch penis. If humans had this ratio, the human penis](https://external-preview.redd.it/QcH16CCDrL42F5zPBEulJ7nsZKchjrzfhIYx_mcxKUs.jpg?auto=webp&s=bfc1296776476195fa8cc5d170c970078495d4f7)
TIL the Argentine Lake Duck has the longest penis to body ratio of any vertebrate. The 8 inch duck has a 17 inch penis. If humans had this ratio, the human penis
![Dr Russell Arnott on Twitter: "As well as having the largest penis-to-body length ratio on Earth, DYK the barnacle also has testicles on its head? 🏔️🍆 #HeadBallsDay #EdBallsDay https://t.co/nOWoqSJKEI" / Twitter Dr Russell Arnott on Twitter: "As well as having the largest penis-to-body length ratio on Earth, DYK the barnacle also has testicles on its head? 🏔️🍆 #HeadBallsDay #EdBallsDay https://t.co/nOWoqSJKEI" / Twitter](https://pbs.twimg.com/media/E0Dpav-WUAIyqMV.png)
Dr Russell Arnott on Twitter: "As well as having the largest penis-to-body length ratio on Earth, DYK the barnacle also has testicles on its head? 🏔️🍆 #HeadBallsDay #EdBallsDay https://t.co/nOWoqSJKEI" / Twitter
![Barnacles Have the largest penis to body size ratio of the animal kingdom - Fun Fact Fox - quickmeme Barnacles Have the largest penis to body size ratio of the animal kingdom - Fun Fact Fox - quickmeme](http://m.quickmeme.com/img/ed/edd489281c589d160f39dd4bb750d0e14268195d9f805bd228eddd7847ce074a.jpg)
Barnacles Have the largest penis to body size ratio of the animal kingdom - Fun Fact Fox - quickmeme
![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)