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TopicGive me an interesting fact.
adjl
12/14/19 1:50:14 PM
#33:


Some species of hermaphroditic marine flatworms reproduce via a process known as "penis fencing." Two two worms will engage in a duel of sorts where they attempt to stab each other with their pointed, dagger-like penises. When one worm succeeds, they inject their sperm through the wound they create, impregnating the other and leaving them with the burden of reproduction.

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