Satu Koivisto and Jørgen Dencker Examining Bottom Sediments. (image) University of Helsinki Share Print E-Mail Caption Satu Koivisto and Jørgen Dencker examining bottom sediments. Credit Photo: Eveliina Salo/Nordic Maritime Group. Usage Restrictions The image may only be used with appropriate credit. 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.