Sharks/Rays Gray SmoothhoundOLYMPUS DIGITAL CAMERAOLYMPUS DIGITAL CAMERAOLYMPUS DIGITAL CAMERAOLYMPUS DIGITAL CAMERAClearnose SkateOLYMPUS DIGITAL CAMERAOLYMPUS DIGITAL CAMERAThorny Stingray - Urotrygon rogersiPacific Ocean, Mazatlán, Mexico