Deep Look

Barnacles Go To Unbelievable Lengths to Hook Up

Season 9 Episode 6 | 3m 58s | Video has closed captioning.

Acorn barnacles might look like jagged little rocks at low tide, but they have a surprisingly wild sex life. These crusty little animals — related to crabs and shrimp — have the longest penis of any animal relative to their body size. It’s up to eight times the length of the barnacle itself!

Aired: 04/26/22

Rating: NR

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Problems Playing Video? | Closed Captioning