Bubble-rafting Violet Snail (IMAGE) University of Michigan Caption Janthina janthina, a bubble-rafting violet snail. This is the most common janthinid species. 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.