The animal kingdom is full of bizarre mating rituals – and one of the oddest must be the Persian carpet flatworm ...
Have you ever wondered how flatworms— you know, those billowing tissue-like invertebrates — reproduce? Well, certain Platyhelminthes engage in a behavior known as “penis fencing,” which involves two ...
From the video, “It’s known as penis fencing, and the worms are the swordsmen” Potentially NSFW if having the word the penis said a dozen times over your computer speakers will cause issues.
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