Radiolarians (IMAGE) European Molecular Biology Laboratory Caption Microscopy image of radiolarians – unicellular organisms found in the upper layers of the ocean. Credit Christian Sardet/Tara Ocean Foundation Usage Restrictions Credit must be given to the creator. License CC BY 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.