Hawaiian bobtail squid (IMAGE) Penn State Caption New study sheds light on how bioluminescent bacteria coordinate cellular signaling to colonize the light organ of the Hawaiian bobtail squid in a mutually beneficial relationship. Credit Michelle Bixby / Penn State Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.