Crumbled wood (IMAGE) Field Museum Caption Wood retrieved from the ocean floor that's been so thoroughly chewed up by the clams that you can crumble it with your hand. Credit Kate Golembiewski, Field Museum Usage Restrictions Please include 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.