Catriona gymnota. Specimen with olive digestive gland and powdery orange and white distally on cerata. Length 10 mm. Near Tubularia on reef exposed to strong tidal rip, LWS, Orkney, Scotland. August 1976. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Catriona gymnota. Length 11mm. Slight anterior expansion on foot, no propodial tentacles. Rocky shore exposed to strong currents, LWS, Menai Strait, Wales. April 2011. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Catriona gymnota.Length 11mm. Form with powdery distal area of cerata orange and white. Rocky shore exposed to strong currents, LWS, Menai Strait, Wales. April 2011. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Catriona gymnota. Length 11mm. Form with powdery distal area of cerata orange and white. Rocky shore exposed to strong currents, LWS, Menai Strait, Wales. April 2011. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Catriona gymnota. From plate in Alder & Hancock (1845-55), as Eolis aurantiaca. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Catriona gymnota. Spawn mass, L.4mm, and escaping veligers. LWS, Menai Strait, Wales. View image details for more info. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Ceras of C. gymnota from Alder & Hancock (1845-55) showing “tricolour” pattern. The orange is often missing on small specimens of about 6mm. On larger specimens, powdery orange may predominate with only a small indistinct band of white. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Ventral view of Catriona gymnota. Length 6mm. At base of Tubularia on rocky shore exposed to strong currents, ELWS, Menai Strait, Wales. March 2011. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Catriona gymnota. Length 6mm. Form with powdery distal area of cerata white only. At base of Tubularia on rocky shore exposed to strong currents, ELWS, Menai Strait, Wales. March 2011. Species Catriona gymnota Photographer / copyright holder I.F. Smith
Catriona gymnota. Length 6mm. Form with powdery distal area of cerata white only. At base of Tubularia on rocky shore exposed to strong currents, ELWS, Menai Strait, Wales. March 2011. Species Catriona gymnota Photographer / copyright holder I.F. Smith