Plankton (IMAGE) Florida State University Caption Euchirella and other copepods (microscopic crustaceans) are important producers of sinking particles. This example was collected on a 2017 cruise on the R/V Revelle. Credit Courtesy of Michael Stukel Usage Restrictions This image may be used with appropriate caption and 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.