Dragging Sediment (IMAGE) University of Queensland Caption Dragging sediment samples across the mudflats in Gladstone, Australia. Credit Chi-Yeung Choi Usage Restrictions Only to be used with this story. Must be credited. 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.