Tough Blue Crab and Tender Mud Crabs (image) Georgia Institute of Technology Share Print E-Mail Caption A blue crab in a tank in a research lab at Georgia Tech. In the tank behind it, small mud crabs are hiding in plastic tubes. Credit Georgia Tech / Alex Draper Usage Restrictions Free for use in reporting on research at Georgia Tech. Share Print E-Mail 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.