A fluid that can only spin in whole numbers: the vortex count jumps rather than rising, and the holes settle into the triangular Abrikosov lattice that has been photographed.
Drawn with: a WebGL2 shader.
Reacts to and looks like: gpu, webgl2 and audio-reactive.
Family: Visualiser.
Runs in your browser. The preview above is the same program the renderer uses.