Three-dimensional rendering of an isolated swirling structure stemming from a relatively small photospheric magnetic flux concentration. Left: Identified three-dimensional swirls colored according to the mean Rortex value R, as in Fig. 7. Thick tubes represent magnetic field lines with the intensity of the magnetic field color coded on them. The corrugated surface near z = 0 km represents the τ₅₀₀ = 1 surface. Right: Instantaneous streamlines of the velocity field belonging to the vortical structures. The strength of the velocity field is color coded on the streamlines.