#current__stream  a steady flow (usually from natural causes); "the raft floated downstream on the current"; "he felt a stream of air"
  supertype:  flowing__flow  the motion characteristic of fluids (liquids or gases)
  subtype:  tidal_flow__tidalflow__tidal_current__tidalcurrent  the water current caused by the tides
     subtype:  tidal_bore__tidalbore__bore__eagre__aegir__eager  a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary)
  subtype:  riptide__rip_current__ripcurrent  a strong surface current flowing outwards from a shore
  subtype:  undertide__undercurrent  a current below the surface of a fluid
     subtype:  sea_puss__undertow__sea-puss__sea_purse__seapurse__sea-purse__seapurse__sea-poose__seapoose  the seaward undercurrent created after waves have broken on the shore
  subtype:  violent_stream__violentstream__torrent  a violently fast stream of water (or other liquid); "the houses were swept away in the torrent"
  subtype:  eddy__twist  a miniature whirlpool or whirlwind resulting when the current of a fluid doubles back on itself
  subtype:  whirlpool__vortex__maelstrom  a powerful circular current of water (usually the resulting of conflicting tides)
     subtype:  Charybdis  (Greek mythology) a ship-devouring whirlpool lying on the other side of a narrow strait from Scylla
  subtype:  ocean_current__oceancurrent  the steady flow of surface ocean water in a prevailing direction
     subtype:  El_Nino  (oceanography) a weak warm ocean current that flows south off the coast of Ecuador at Christmas time
        subtype:  El_Nino_southern_oscillation  a more intense El Nino that occurs every few years when the welling up of cold nutrient-rich water does not occur; kills plankton and fish and affects weather patterns
     subtype:  equatorial_current  any of the ocean currents that flow westward at the equator
        subtype:  North_Equatorial_Current  an equatorial current that flows west across the Pacific just north of the equator
        subtype:  South_Equatorial_Current  an equatorial current that flows west across the Pacific just south of the equator
     subtype:  Gulf_stream  a warm ocean current that flows from the Gulf of Mexico northward through the Atlantic Ocean
     subtype:  Japan_current__Kuroshio_current__Kuroshio  a warm ocean current that flows NE off the coast of Japan into the N Pacific
     subtype:  Peruvian_current__Humboldt_current  a cold ocean current that flows north along the Pacific cost of South America before turning west

No statement uses or specializes current; click here to add one.