Wave logger (IMAGE) University of Groningen Caption This picture shows a wave logger which was used in this study. It is placed in a tidal mud flat. Credit B. Marin-Diaz, University of Groningen Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.