Recycled Bottle Lobster...When a female lobster is ready to molt and mate, she enters the male’s den. She then sheds her shell, becoming totally helpless. (She can’t even stand until her new shell is at least 30 minutes old.) The male could easily eat a lobster dinner at this point, but he does not. He mates with her, and she stays in his den for a week until her shell fully hardens—protected by the male. Who knew lobsters were so romantic?