Meckelia annulata

Cinnamon red color sometimes a chocolate reddish-brown color. Dorsal white head edges with a half circular spot in the center. Has cephalic ridges, white lateral longitudinal stripes and complete white rings. Both a white median stripe on the dorsal surface bifurcates at the head tip enclosing a patch of the same color as the body easily distinguishes this species form Tubulanus superbus. The ventral surface is pale compared to the dorsal. All but the first 2-3 white rings are more or less equidistantly spaced.

intertidal under stones, on sand, mud or coralline ground; sublittoral among holdfasts of Laminaria to depths of about 12m in course tubes attached to old bivalve shells

Up to 75cm in length and maximum width of 5mm

Atlantic, Irish Sea, North Sea, Italy (Naples), British Isles, Pacific coast of USA (Alaska), France (Banyuls), west coast of Sweden (Tjarno and Kristineberg)