Jana Johansson and Bo Sha (IMAGE) Stockholm University Caption Bo Sha and Jana Johansson taking ocean water samples. At each of the 28 sampling stations, samples were taken from seven varying depths ranging from the surface down to 5 km. Credit Bo Sha, Department of Enviromental Science, Stockholm University Usage Restrictions no License Original 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.