Hermaphrodite sea slug mates with throwaway penis

via Hermaphrodite sea slug mates with throwaway penis – Science.

The animal, described Tuesday in the journal Biology Letters, is the first discovered to use an easily regenerated, disposable penis.

Nudibranches are simultaneous hermaphrodites, meaning that they have penises that they use to fertilize others as well as female sex organs. But exactly how their sex worked remained a mystery.

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