Fast-moving Sperm (VIDEO) Washington State University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption WSU researchers have seen how an enzyme in the uterus can make semen more watery, making it easier for sperm like these to swim towards the egg. Credit Washington State University 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.