Beach litter at Discovery Park (IMAGE) University of Washington Caption Beach litter at Discovery Park in Seattle includes a plastic shotgun wad, pieces of glass (green), a metal bottle cap (right foreground) and a piece of brick (far right). Volunteers’ surveys showed that non-plastic items like metal, glass and cement are more common on Puget Sound beaches than on the outer coast. Researchers say this suggests most of the litter in Puget Sound is generated locally. Credit Kathy Willis/University of Washington Usage Restrictions With credit License Original 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.