I found a baby crab in my shell bag from my recent trip to the beach. I really would hate to kill it and going back to the beach is currently out of the question...I'd like to keep him but I can't identify what specie of crab he is, nor can I find any information on keeping marine (baby) crabs! He is in a tupperware now with conditioned water (with 4 granules of aquarium salt...) and some sand & shells....Is it hopeless? Does anyone have any experience with this or know where to direct me? Thanks!