Stickleback Specimens (IMAGE) University of California - Santa Cruz Caption Stickleback specimens collected in the Big Sur River in 2017 are morphologically different from ones collected in the same location in 1974. Credit Courtesy of E. Palkovacs Usage Restrictions For use only with news coverage of this research 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.