Not a waterfall but flowing water nonetheless – some soft wave action from a glorious couple of minutes at sunset a few weeks ago.
This photo was taken the same night as this one when the sun broke through the clouds only moments before sunset. I was captivated by the gentle wash of the waves and the reflection of the pink light on the wet sand, which gave me the idea of taking a photo with a long-enough exposure to blur the waves and give the viewer a sense of that motion. It took many attempts as I did not have a tripod, plus I had to wait for the right combination of waves and wet sand. But eventually I got one that was more or less exactly what I had in mind (indeed, this was one of those rare photographs that I actually envisioned before I took it). To top it off, the contrast between the blue water and the pink reflection is just lovely to my eye.