<em>P. pacificus</em> (IMAGE) Indiana University Caption This is an image showing, left, the single-toothed predatory and, right, wide-mouthed bacterial-feeding forms of the worm, P. pacificus. Credit Erik Ragsdale 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.