Polychaete Worm (IMAGE) National Oceanography Centre, UK Caption Pista spinifera is a polychaete worm found in subpolar regions. Credit Sven Thatje 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.