Tumbling E. coli (video) Cell Press Share Print E-Mail Loading video... Caption When bacteria tumbles near the surface, one of its flagella jiggles out of place. The bacteria tumbles, decelerating and re-orientating itself to leave the surface. Credit Laurence Lemelle Usage Restrictions Credit Required. Share Print E-Mail 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.