Simplified cartoon showing how turbulent motions drive vortices on different spatial scales. The lines with arrow heads represent the surface flows, being convective motions in the granules and small-scale turbulent motions in the intergranular lanes. These turbulent motions cover a range of scales and couple to the magnetic field (dashed curves) producing vortices at various scales from the whole flux tube (upper panel) down to the resolution limit of the simulation (lower panel).