ascidian

Noun
  1. Minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves (synset 101471353)
    is a type of: tunicate, urochord, urochordate - primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
    subtypes: sea squirt - ascidian that can contract its body and eject streams of water
    belongs to: ascidiaceae, class ascidiaceae - sometimes classified as an order: sea squirts

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