Blue Swimming Crab Portunus segnis (IMAGE) Royal Netherlands Institute for Sea Research Caption Barr Al Hikman is an important nursery ground for Blue Swimming Crab Portunus segnis. This crab provides a major income for local fisheries. ©Jan van de Kam Credit ©Jan van de Kam Usage Restrictions Credit photographer 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.