code: def harmonize_ocean(ocean, elevation, ocean_level):
      
  
      shallow_sea = ocean_level * 0.85
      midpoint = shallow_sea / 2.0
  
      ocean_points = numpy.logical_and(elevation < shallow_sea, ocean)
  
      shallow_ocean = numpy.logical_and(elevation < midpoint, ocean_points)
      elevation[shallow_ocean] = midpoint - ((midpoint - elevation[shallow_ocean]) / 5.0)
  
      deep_ocean = numpy.logical_and(elevation > midpoint, ocean_points)
      elevation[deep_ocean] = midpoint + ((elevation[deep_ocean] - midpoint) / 5.0)
docs: The goal of this function is to make the ocean floor less noisy.
      The underwater erosion should cause the ocean floor to be more uniform