Blue land crab (IMAGE) University of Helsinki Caption Blue land crab Cardisoma guanhumi Latreille, 1828, from Atlantic region, not listed in IUCN Red List but threatened by overexploitation. Credit Marco Antonio de Freitas. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.