Tidepool Tim says, "Hermit crabs are a lot of fun to watch and keep in a tank. They're naturally social creatures and are often found in small groups. They're vulnerable without their shell homes, so when they start to outgrow their residence, they keep their eyes out for a new one. They have even been known to help each other look for new shells, and form lines from largest to smallest when a new shell shows up to their environment. They also like to decorate their shells with camouflage and stinging anemones for protection. If you have a hermit crabs, look out for empty shells on the beach to bring home for them!"