Bubble-rafting Brown (IMAGE) University of Michigan Caption A rare bubble-rafting brown janthina snail, Recluzia cf. jehennei. Scientists believe the bubble float evolved from an ancestral egg mass. Credit Denis Riek 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.