The Sea Slug Forum - Flabellina nobilis. Order: NUDIBRANCHIA Suborder: AEOLIDINA Family: Flabellinidae DISTRIBUTION Northeast coast of Nth America (Massachusetts, Maine), Greenland, Iceland, the Faeroes, Barents Sea, nthn coast of Norway. Reported below from Ireland. PHOTO New England. Photo: Paul Young Grows to 40-50mm. Translucent white body with maroon to red-brown cerata with conspicuous white tips.