Work Aboard the RV Polarstern (IMAGE) University of Oldenburg Caption 18 sediment cores from the seabed were brought on board the research vessel "Polarstern" by means of plungers and gravity sounders. Credit Katharina Pahnke / University of Oldenburg Usage Restrictions The image may only be used with appropriate caption and credit and only related to the content of this press release. 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.