A Rugged Stretch of the Channel Islands (image) California Academy of Sciences Share Print E-Mail Caption The study team conducts a shoreline survey of prehistoric Chumash sites, which often contain discarded abalone shell. Credit © 2015 Todd Braje Usage Restrictions Photo credits mandatory. For editorial use only. Share Print E-Mail 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.