Nice pool at the end there. I designed one myself in a desert locale that looked very much like it - natural shape with plantings and a bottom surface material that gets that shape of blue and something, I know that what, that I find so pleasing to the eye. If you add some boulders in the right places, which water cascading down in the crevices between, you get my seal of approval. Below the natural irregular shape, on the pool floor, was a line of tiles to follow to swim the laps, with rock speakers to blare out a pulsating beat to follow, one stoke at a time.