Acorn barnacles have the longest penises (relative to body size) of any animal - they can extend to over 6 times the length of the body. Adults are hermaphrodites but they can't
Five Facts: Barnacles – Research News
barnacle facts
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Nine of the Weirdest Penises in the Animal Kingdom | Science | Smithsonian Magazine
NCBI ROFL: You know what they say about barnacles with long legs... | Discover Magazine
The barnacle's penis. | Pygmy Loris
The Largest Penis in the World
Barnacles' Penises Are Eight Times as Long as Their Bodies - Nerdist
Barnacles
The weirdest penis stories in the animal kingdom revealed
Penis length isn't everything … for barnacle males | New Scientist
The Wacky World of Barnacles - CoastMountainExpeditions
Barnacles' Penises Are Eight Times as Long as Their Bodies - Nerdist
Penis length isn't everything … for barnacle males | New Scientist
Poorly-Endowed Barnacles Overthrow 150-Year-Old Belief
Precisely proportioned: intertidal barnacles alter penis form to suit coastal wave action | Proceedings of the Royal Society B: Biological Sciences
Why do whales have ten foot penises while so many other sea creatures have no penis? - Quora
1 Reproductive behaviour of barnacles. In some species the penis length... | Download Scientific Diagram
Barnacles, Proportionally, Have The Largest Penis In The Animal Kingdom
How Do Barnacles Mate? | WIRED
Barnacles
Sex lives of barnacles is record-breaking › News in Science (ABC Science)
Some Barnacles Can Move Around to Improve Feeding Position | The Scientist Magazine®
