#equatorial_current  any of the ocean currents that flow westward at the equator
  supertype:  ocean_current__oceancurrent  the steady flow of surface ocean water in a prevailing direction
  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

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