Cadlina laevis - White Atlantic cadlina - Kaalslak

Cadlina laevis  (Linnaeus, 1767) 

White Atlantic cadlina - Kaalslak

Inner Lees - Empire Tana, Ballyhenry Island,  Strangford Lough, United Kingdom, 22-7-2011. Crop of next photo.

Inner Lees - Empire Tana, Ballyhenry Island,  Strangford Lough, United Kingdom, 22-7-2011.