Hermit Crabs are interesting to watch; they go from a single shell to another. They are social and do best when placed with other hermit crabs if their tank is roomy plenty of. House somebody in a ten- to twenty-gallon tank. Possibly you are a admirer of Tom Cruise's character http://www.koreatransport.com/bbs/board.php?bo_table=m03_01&wr_id=27585