Each one of the 2 "half penises", which aren't merged together into a single penis, found in some vertebrates, like sharks and scaled reptiles.
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A hemipenis is a paired organ found in male reptiles, such as snakes and lizards, used for reproduction. Each hemipenis is typically stored in a separate hemipenial sac and is used to deliver sperm to the female during copulation. The structure and shape of hemipenes can vary greatly across different species.