Average density profiles at t = 2t₀ for the O4 model (top) and the WR model (bottom), with the vertical axis in logarithmic scale. The red dashed lines indicate the predicted convective region and the blue dashed lines indicate the predicted strange mode region. In the WR model, the whole domain is predicted to be unstable to strange modes, which we indicate by the blue dashed lines at the edges of the plot. The dotted black lines indicate the photosphere.