Penelope, my little blue orconectes immunis, molted yesterday. I came downstairs in the morning to find this: An exo! Penelope was hiding, but she came out and ate her exo during the day while I was at work, and when I got home she was already feeling chipper enought to charge out and wave her claws at me: Here's another picture of her post-molt: Just for comparision, a crayfish molt (if it goes well) only takes about five minutes or so. And the exo is usually eaten pretty fast -- by the time I went to bed, only the thumbs were left. A bit easier on the nerves than your average hermit crab molt, though when it goes wrong it can be just as sad.