Green crab trapping (IMAGE) University of California - Davis Caption UC Davis Professor Edwin Grosholz holds a trap of invasive European green crabs at Seadrift Lagoon near Stinson Beach in California. Credit Courtesy Edwin Grosholz, UC Davis Usage Restrictions Provide 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.