Marine Flatworm (VIDEO) American Physical Society This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption A 5-centimeter long marine flatworm swims by manipulating its body geometry without apparent stretching. The mathematical model to the right uses theory developed by Shankar Venkataramani's University of Arizona group to construct a synthetic swimming "stroke" in which the sheet is always unstretched, and correspondingly, the energy budget is very small. Credit Shankar Venkataramani, University of Arizona Usage Restrictions Journalists may use this video only with appropriate 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.