#aquatic_vertebrate__aquaticvertebrate  animal living wholly or chiefly in or on water
  supertype:  vertebrate__craniate  animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
  subtype:  jawless_vertebrate  placoderm  fish
  part:  flipper  the flat broad limb of aquatic animals specialized for swimming

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