docs: def plot_swim_speed(exp_ind, swim_speed):
      '''Plot the swim speed during experimental indices
  
      Args
      ----
      exp_ind: ndarray
          Indices of tag data where experiment is active
      swim_speed: ndarray
          Swim speed data at sensor sampling rate
      '''
      import numpy
  
      fig, ax = plt.subplots()
  
      ax.title.set_text('Swim speed from depth change and pitch angle (m/s^2')
      ax.plot(exp_ind, swim_speed, linewidth=_linewidth, label='speed')
      ymax = numpy.ceil(swim_speed[~numpy.isnan(swim_speed)].max())
      ax.set_ylim(0, ymax)
      ax.legend(loc='upper right')
  
      plt.show()
  
      return ax