Choanoflagellates Flip from Ball to Cup (VIDEO) Howard Hughes Medical Institute This video is under embargo. Please login to access this video. Caption A newly discovered species of choanoflagellates performs a flip, inverting from a ball of cells with tail-like flagella pointing outside to a cup-shaped form with flagella inside. The species, named C. flexa for its abilities, may use the ball form for swimming and the cup form for feeding. Credit T. Brunet, B. T. Larson, T. A. Linden et al./Science 2019 Usage Restrictions Must use 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.