Two-headed Hydra (VIDEO) Cell Press 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 This video shows a two-headed hydra growing alongside a one-headed hydra. The wire underneath the one-headed hydra helped to stabilize the growth along the body axis. Credit Livshits and Shani-Zerbibet al. Usage Restrictions Credit Required. 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.