Experimental Setup (IMAGE) University of Chicago Caption The mussel larvae, over 1 million individuals in total, were kept in a series of buckets, with carbon dioxide-manipulated seawater pumped in from head tanks to carefully regulate the pH levels in the larval cultures. Credit Mark Bitter 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.