Obelia bidentata Clark, 1875

Material examined. Stn. RAS — 12.ii.2010, Ant.08/2010 (10–40 m): a few, small (2–5 mm high), sterile stems, on bryozoan and basal part of stems of Sertularella gaudichaudi .

Geographical distribution. Possibly cosmopolitan; Antarctic records summarized by Peña Cantero (2008).