Today, I combined my love of flower shots, water shots and inverted trickery. Day 188's shot:
In this shot, a blue background is placed behind my acrylic tank and lit with a speedlite off to the side, and a softbox is overhead of the tank. The flower if held down into the water, and air bubbles are blown up from below it. Invert the shot in post processing, and you get what looks like mercury drops on the flower.
I've seen this technique used before, and my shot is not up to to par of a lot of the other ones I've seen. My bubbles are too big, and I think my setup is a bit amateur compared to the others, but it was a fun shot to do!