Larval Sea Urchins (IMAGE) University of Southern California Caption This is a swarm of microscopic larval sea urchins, similar to those studied by Pan, Applebaum and Manahan. Credit Film footage/Plankton Chronicles Usage Restrictions For use in news stories only 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.