"The HCA has reported some crabs living as long as 40 years.Merchlinsky said his family???s new pets would be greeted by a collection of shells, logs, and other accessories left from the 20 or so crabs they???ve taken home over the years.He estimated the new pets would survive six months: ???At least we make the six months they live at home a happy six months.???All hermit crabs are born at sea, bu" . . . .