By the Huka Falls, New Zealand - sunny autumn day

Went to the Huka Falls for some time out.
I am very sensitive to sound (hyperacusis). However, I find the sound of the Huka Falls, the rushing of the water soothing. Perhaps it's because I was taken here since a baby?
The sound of the whitewater drowned out most annoying sounds, like people speaking.
I went for a walk with my wider lens (18-45mm) today, which is better for landscapes but can't zoom in much with birds.
If you look carefully, there are rainbow colours near the bottom of the spray, at the beginning and near the end (on one side of the river, with the light behind me). I have also seen a spectrum in the spray when I went in the morning one time.