Blue Crab (<i>Callinectes Sapidus</i>) (IMAGE) Marine Biological Laboratory Caption This is a blue crab, Callinectes sapidus, caught in Ipswich, Mass., 80 miles north of its historical native range. Credit David Samuel Johnson Usage Restrictions Please use with proper credit. 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.