Choanoflagellate Colony (image) University of California - Berkeley Caption Triggered by the presence of bacteria, the single-celled choanoflagellate Salpingoeca rosetta divides and aggregates with its sisters into a colony. One reason may be that the colony is a more efficient way of capturing food, like a "Death Star" sitting amidst the bacteria and chowing down. Credit Scanning electron microscope image courtesy of Nicole King. Usage Restrictions None 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.