Ocean microscope (IMAGE) Stanford University Caption Stanford researchers Manu Prakash and Deepak Krishnamurthy use a rotating microscope that they developed to observe for the first time a single-cell diatom, a type of plankton, as it changes its density to move through water. Credit Hongquan Li Usage Restrictions credit Hongquan Li 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.