genus Hermissenda


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Noun1.genus Hermissenda - genus of marine sea slugsgenus Hermissenda - genus of marine sea slugs    
mollusk genus - a genus 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
Hermissenda crassicornis - a kind of sea slug