Estero Bluffs State Park (IMAGE) University of California - Santa Barbara Caption Estero Bluffs State Park is near Cayucos, California, one of the 25 sites used in the study. Credit <a target="_blank"href="https://commons.wikimedia.org/wiki/File:Estero_Bluffs_State_Park,_just_north_of_Cayucos,_CA,_10_October_2013._%2810234210144%29.jpg">Mike Baird, Morro Bay, CA, via Wikimedia Commons</a> Usage Restrictions <a target="_blank"href="https://creativecommons.org/licenses/by/2.0/deed.en">Creative Commons Attribution 2.0 Generic license</a> 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.