A drop on a leaf, with floating pollen at the top:
Here’s the story: it started to shower, and I noticed a plant that had rows of shiny droplets, each with a bit of white at the top. At first I thought the white was reflected light from the sky. At high magnification, I could see that the white was specks of pollen that had floated to the top of the drop. As rain entered and enlarged the drop, the contents of the drop swirled like a shaken snow globe. The pollen (and other stuff in the drop) was constantly in motion, sometimes shifting slightly, sometimes a chaotic whirl. The darker areas are the reflected trees nearby.
I went back after the rain, and the drops were mostly gone. This sight was only visible while the rain was falling.