#water_snake__watersnake  any of various mostly harmless snakes that live in or near water
  supertype:  #colubrid_snake__colubrid  mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes
  subtype:  #common_water_snake__banded_water_snake__Natrix_sipedon__Nerodia_sipedon  in some classifications placed in the genus Nerodia; western United States snake that seldom ventures far from water
  subtype:  #water_moccasin__watermoccasin  any of numerous North American water snakes inhabiting fresh waters
  subtype:  #ring_snake__grass_snake__grasssnake__ringed_snake__Natrix_natrix  harmless European snake with a bright yellow collar; common in England
     subtype:  #viperine_grass_snake__Natrix_maura  a small harmless grass snake

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