I fill a large plastic bottle of water from the tap to water my houseplants. It had the advantage that I can reach some of the pots that are a bit out of reach for me.
This morning I saw all these tiny bubbles in the water. Air must have been dissolved in the water and had condensed on slightly rougher places on the surface of the plastic.
The blues and greens are from the tiles and paintwork in the kitchen. The shape of the bottle, with its swirling curves, adds to the interest. The bottle also acted as a lens and I like the contrast in the focus, making the bubbles in and out of focus.