Phytoplankton (IMAGE) Max Planck Institute for Marine Microbiology Caption Seasonal blooms of tiny algae play an important role in marine carbon cycling. Now a new detail of the surrounding mysteries has been uncovered. Credit Max Planck Institute for Marine Microbiology / G. Reintjes Usage Restrictions Free to use in the context of this publication when citing the proper copyright. License Licensed 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.