Hydra Somersaults (IMAGE) Columbia University Caption The time-lapse image above shows Hydra moving through a somersault, its main form of locomotion. Credit Yuste Lab/Columbia University 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.