Translucent white body, with no opaque marks on surface, reveals pinkish ovotestes in the posterior half. Cerata have grey-brown digestive gland partly obscured by fine surface freckling of blue, white and pale yellow.
On this specimen, with oral tentacles at right angles to the body, it is difficult to differentiate the tentacle bases from the front edge of the head.
Cornwall, November 2021. © G. Freeman.