'Sham Mating' of the Lampreys (VIDEO) Hokkaido 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 This is the 'sham mating' of the lampreys. The lampreys frequently mate without releasing eggs. Credit Yamazaki C, Koizumi I. <i>Journal of Ethology</i>, January 19, 2017 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.