Coccolithophore (IMAGE) Johns Hopkins University Caption This is a scanning electron microscope image of a coccolithophore, which can measure from 5 to 15 microns across, less than a fifth the width of a human hair. Credit Amy Wyeth, Bigelow Laboratory for Ocean Sciences Usage Restrictions None 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.