<I>Hydra magnipapillata</I> (IMAGE) BMC (BioMed Central) Caption This is the fresh water polyp, Hydra magnipapillata. Credit Dr. David Plachetzki, University of California 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.