Berthella plumula. Length 13mm. Pair of enrolled rhinophores project forwards between mantle and oral veil. LWS. Menai Strait, Wales. March 2011. Species Berthella plumula Photographer / copyright holder I.F. Smith
Berthella plumula. Length 13 mm. Reticulation on mantle resembles lobules of Oscarella (encrusting sponge). Dull orange viscera indicate position of shell. Large transparent central spot resembles osculum of Oscarella. LWS. Menai Strait, Wales. March 2011 Species Berthella plumula Photographer / copyright holder I.F. Smith