Exploratorium - Here are a couple of California barnacles or...
Why do whales have ten foot penises while so many other sea creatures have no penis? - Quora
Penis length isn't everything … for barnacle males | New Scientist
Barnacle | in proportion to their body length, barnacles hav… | Flickr
Barnacles
Barnacle - Uncyclopedia, the content-free encyclopedia
barnacle facts
Researcher discovers unique anatomical characteristic in barnacle study
Barnacle penises are really fascinating | Boing Boing
1 Reproductive behaviour of barnacles. In some species the penis length... | Download Scientific Diagram
How Do Barnacles Mate? | WIRED
Barnacles
Barnacles' Penises Are Eight Times as Long as Their Bodies - Nerdist
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
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/ec/30/ec308e02-b8b5-4917-a01c-6c3be818e9eb/mussels-419050.jpg "Nine of the Weirdest Penises in the Animal Kingdom | Science | Smithsonian Magazine")
Nine of the Weirdest Penises in the Animal Kingdom | Science | Smithsonian Magazine
Barnacle - Wikipedia
Precisely proportioned: intertidal barnacles alter penis form to suit coastal wave action | Proceedings of the Royal Society B: Biological Sciences
Barnacle Sperm Casting | The Madreporite
The Largest Penis in the World
How Do Barnacles Mate? | WIRED
The barnacle's penis. | Pygmy Loris
Sex lives of barnacles is record-breaking › News in Science (ABC Science)
Barnacles Use 'Spermcasting' To Overcome Penis Length, New Study Suggests | HuffPost Impact
On the study of crustaceous genitalia | Deep Sea News
Penis length isn't everything … for barnacle males | New Scientist
