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Noun1.Tethyidae - sea haresTethyidae - sea hares        
mollusk family - a family of mollusks
Nudibranchia, order Nudibranchia - comprising numerous marine gastropod mollusks lacking a shell in the adult state and usually having a body like a slug
Aplysia, genus Aplysia, genus Tethus, Tethys - type genus of the family Aplysiidae
References in periodicals archive ?
Melibe leonina, a carnivorous nudibranch of the family Tethyidae, is distinguished by an extended oral veil used in prey capture (Agersborg, 1923).