Patterns large and small

Below is a small collection, mostly movie stills, of recent lab work on whirlpool vortices - I'm intrigued by the similarities with galactic formations, and by the transformation of patterning as it disappears down the hole forever.  I've been on the look out for hexagons as always - managed to find quite a few!

'Embryonic vortex'

'Gathering material'

'Moving towards a hexagon'

'Swallowing the pattern'

'Anamorphic transform'

'Evolving waves'