Turtles in Jewel Lake (IMAGE) University of California - Berkeley Caption Turtles bask in the sun at Jewel Lake in Northern California's Tilden Regional Park. In the middle, a western pond turtle, one of California's few native turtles, holds up it's head, and on the far right sits an invasive red-eared slider turtle, which can be identified by the characteristic red stripe on the side of its head. Credit Photo by Robin Lopez Usage Restrictions With Credit Please only use in association with articles that mention the PeerJ study 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.