Drag Measurements (image) American Institute of Physics Caption This image shows experimental measurement of the drag on a partially submerged waterbird in waves. Credit FAU/K.von Ellenrieder Usage Restrictions This image may be used only with appropriate caption and credit. 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.