Common Shore Crab Tank (image) Queen's University Belfast Caption The tank used in the study housed two shelters for the crabs. Credit Queen's University Belfast Usage Restrictions Embargoed until 2300 GMT / 1800 BST Wednesday 16 January 2013. 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.