Numerous attempts to mark blue crabs permanently have met with limited success. The most commonly used tags are applied externally and, therefore, must penetrate or attach to some portion of the exoskeleton, typically the carapace (Cronin, 1949). Since the exoskeleton (and the attached tag) is shed during the molting process, most tagging studies to elucidate blue crab migration and population dynamics have been restricted to the adult segment of the population, which has limited (mature males) or presumably no (mature females) molting capability.