Ray Filters, Gill Arches CT Scan (IMAGE) University of Washington Caption Filters, in red, attached to the gill arches, in blue, of a Munk's devil ray are typical of the placement in mantas and other devil rays. Credit M Paig-Tran/T Kleinteich/U of Washington Usage Restrictions Credit required 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.