Sex, Death and the Single Snail (image) National Evolutionary Synthesis Center (NESCent) Caption These Physa acuta snails prefer to mate with a partner rather than fertilize themselves. But if a suitor is nowhere to be seen, solitary snails change their dating and mating strategy when danger is near. Credit Photo by Josh Auld 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.