Microorganisms in Motion (IMAGE) Brown University Caption The beating flagella of a Volvox colony creates a flow of water around it, visible here through the use of miniscule, illuminated plastic beads. Credit University of Arizona 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.