I'm almost afraid to ask, but what kind of liquid is that in the jar?
Well, I'm ashamed to say that the prompt only says "submerged under water."
Besides, what you're thinking would be a blatant plagiarism of current high culture.
The Venice Biennale art fair is currently taking place in Venice, Italy. And at the SeaWorld booth, visitors' urine is being collected, processed, and purified, and a naked female diver is sitting in the tank.
In an even larger pool, a naked woman is riding a jet ski, and that's just the tip of the iceberg:
Rare Specimen