Mass of Tubeworms (IMAGE) University of Hawaii at Manoa Caption This image shows a mass of tubes of Hydroides elegans that recruited to a screen suspended from a pier in Pearl Harbor. Such an accumulation of hard, calcified tubes is what makes this tubeworm such a problem for ships, harbors and coastal industries. Credit Brian Nedved, UH Usage Restrictions Image may be used with appropriate caption and 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.