1 Caribbean Land Hermit Crab with Deluxe Polished Shell (Coenobita clypeatus) by Aquatic Arts The hermit crab from this listing currently inhabits a deluxe polished shell. We also sell more of these beautiful polished shells to keep as extras for your hermit crabs! Since Hermit Crabs live in coastal areas, they require non-metal bowls of de-chlorinated freshwater and marine salt water (no table salt) in which they can submerge but not drown. The bowl should be deep enough for crabs to submerge and get water in their shells, but also easily climb out of the water bowl. Despite the name, hermit crabs are not loners and are known to live in massive groups of up to one hundred crabs! Hermit crabs are climbers, so driftwood pieces should be added to the terrarium to allow climbing. Place driftwood so that the crabs can't climb out. All Aquatic Arts (formerly InvertObsession) brand plants and animals come with a 100% live arrival guarantee, plus free email support directly from the owners!