Himatina trophina (Bergh, 1894). North West Pacific, Kamchatka. ZMMU Op-29, living specimen 32 mm length: A dorsal view B ventral view ZMMU Op-532, fixed specimen 27 mm length C lateral view D ventral view E details of cerata ZMMU Op-29 F dissected anterior part (pharynx removed) and rhinophores, SEM G jaw, SEM H details of masticatory process of jaw SEM I radular teeth, posterior part, SEM J reproductive system, light microscopy K reproductive system SEM L penis, SEM. Abbreviations: a anus am ampulla fgm female gland mass go genital opening nc continuous notal edge p penis ps penial sheath r rhinophores rsd distal receptaculum seminis rsp proximal receptaculum seminis. Scale bars: G, K, L = 1 mm; H = 30 μm; I =10 μm. Photos and SEM images by T.A. Korshunova, A.V. Martynov.