Reproductive Snails (IMAGE) University of Iowa Caption Why do animals engage in sex to reproduce? University of Iowa biologists' work with sexual female and asexual female snails raises more questions about value, purpose of sex. Credit Justin Torner, University of Iowa 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.