Marine organic matter (IMAGE) University of Leeds Caption It is not possible to see plankton preserved in sediments in a recognisable form. The image shows a light microscope image of marine organic matter collected with a plankton net from the Southwest Indian Ocean aboard the GLOW Cruise. Credit Dr Tracy Aze, University of Leeds Usage Restrictions Please use credit 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.