sciencehabit writes: The colorful sea slug known as Chromodoris reticulata (center image) boasts the ultimate throwaway culture. Researchers report that the animal, found in the Pacific and Indian oceans, sloughs off its penis after sex—then grows a new one. The animals shed their outer male organs 15 to 30 minutes after mating, but they were equipped for love again after roughly 24 hours. This is the first known case of copulation with what the researchers call a "disposable" penis.
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