Dissecting Otolith (image) University of Washington Share Print E-Mail Caption An otolith is pulled out from inside the brain cavity of a Chinook salmon. Credit Britta Retzlaff Brennan Usage Restrictions Photo credit required. 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.