Dorsal (top) and ventral view of radula with much tissue of the partly-removed white radular sac still adhering. At the anterior, there are golden brown, fully-developed teeth and a transparent hyaline shield (1). Long marginal teeth protrude at point (2) where a section of the dorsal surface is twisted into view, and are enlarged at (3).
Menai Strait, Wales. September 2016.