Discerning What Microbes Eat (IMAGE) North Carolina State University Caption The gutless marine worm Olavius algarvensis is a test case for the new technique. This worm is special because it does not have a digestive system and instead is fed by a community of symbiotic bacteria living in the worm. Credit Christian Lott Usage Restrictions None 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.