Coccolithophore and Coccoliths (IMAGE) Hiroshima University Caption Coccolithophore phytoplankton Emiliania huxleyi and cells covering crystals of calcium carbonate -- coccoliths. The coccoliths are 2-3 m in diameter. Credit Hiroshima University Usage Restrictions This image may only be used with appropriate caption and credit. 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.