About Polycera faeroensis Lemche, 1929
This species of nudibranch has a translucent white body with yellow processes and a yellow line running along the ridge of its tail. Its oral veil has eight or more yellow projections. The gills and rhinophores are translucent white, with yellow tips. Beside the gills, the pallial margin is expanded and produces a pair or a series of yellow-tipped projections. Some individual nudibranchs have yellow spots or lines on their bodies. Adults can grow up to 30 millimeters in total length. It can be told apart from the related species Polycera quadrilineata by having more than six processes on the oral veil and a squatter body shape. Polycera faeroensis was first described from the Faeroe Islands. It is a common species in shallow water in the northeast Atlantic, ranging as far south as Portugal. This nudibranch feeds on erect bryozoans, including Bicellariella ciliata, Bugula flabellata, and members of the family Crisiidae.