#plankton  the aggregate of small plant and animal organisms that float or drift in great numbers in fresh or salt water
  supertype:  living_thing__organism__being  a living (or once living) entity that has (or can develop) the ability to act or function independently
  member:  phytoplankton  zooplankton
  member of:  congeries
  part:  copepod_crustacean__copepodcrustacean__copepod  minute marine or fresh-water crustaceans usually having six pairs of limbs on the thorax; some abundant in plankton and others parasitic on fish

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