Extended Data Fig. 3: The breakdown in symmetry in the SVR of dandelion seeds.
From: A separated vortex ring underlies the flight of the dandelion

a, b, At low speeds, the SVR is axisymmetric. a, Contrast-enhanced image. b, Original image. c, d, At higher speeds, this symmetry is lost. c, Contrast-enhanced image. d, Original image. a–d, Experiments were repeated independently on n = 10 biological samples, with similar results. e, f, The axisymmetry of SVR at low Re (e) breaks down at higher Re (f).