Salt AND fresh water is required! The hermit crab will make up his own mixture of water that he keeps in his shell. Great example of proper hermit crab pools! :) Crabitat Pools by ~GodzillaHermitCrab on deviantART
Things about hermit crabs.need to know for class pet : Cuddle factor depends on the individual crab, I had one that never hid when I picked him up. I even had him trained to sit on my shoulder like a parrot.