sentences:  Doridoidea
  
  Doridoidea, commonly known as dorid nudibranchs (and previously known as the taxon Cryptobranchia), are a taxonomic superfamily of medium to large, shell-less sea slugs, marine gastropod mollusks in the clade Doridacea, included in the clade Nudibranchia.The word "Doridoidea" comes from the generic name "Doris", which was in turn copied from the name of the sea nymph, Doris, in Greek mythology.