Sediment core (IMAGE) University of California - Santa Cruz Caption Sediment cores from the Bering Sea hold a record of past low-oxygen events in the form of layered or "laminated" sediments. Credit IODP Usage Restrictions For use only with news coverage of this research 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.