Photo date: May 28, 2019. Photographer: Mark Mahin.
I took the photo below while photographing nothing but ordinary drops of pure, clean water falling in front of a dark, featureless background. We see what I have so often photographed before: orbs with strange holes in them. You can see right through one of the holes.
On the same day I took the photo below, in which you see some strange circular features inside a single drop of clean, pure water, apparently spinning around at a high speed. It looks like another example of the "orb centrifuge effect" I have 100 times previously photographed.