Salmon-6-29-22.jpg (IMAGE) University of Alaska Fairbanks Caption Migrating sockeye salmon approach their spawning grounds on a tributary of the Copper River. Credit University of Alaska Fairbanks photo Usage Restrictions Must credit University of Alaska Fairbanks License Original 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.