Box Corer (image) Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research Share Print E-Mail Caption Scientists and members of the Polarstern crew lift a box corer on board. The box corer was used to recover a sediment core from the ocean floor of the East greenland shelf. Credit Alfred-Wegener-Institut / Maciej Telesinski Usage Restrictions All rights reserved / Editorial use only / With copyright notice only / No Sale / No Promotion Share Print E-Mail 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.