#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
  part:  #copepod_crustacean
  member of:  #congeries__congerie__aggregate__conglomeration  a sum total of many heterogenous things taken together

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