A nice flat collision shot from red food colouring dropped into good old fashioned tap water.
A Robin singing its head off. Most people think these are only about in the winter, but they are in the UK throughout the year.
Another one from my black and blue session, the very early stages of drop drops colliding mid air. Black food colouring with a blue gelled flash.
I nice mid air collision from a drop moving upwards from the top of the spike and one coming down. Black food colouring with a blue gelled flash.