Atmospheric Optics and asked him what he thought.
Like this, when Roger and I were in Capitola the other day, we went for a walk out to the end of the wharf, as we always do. We were looking over the railing into the water to see what birds or mammals were out there. This is what we saw instead. (Click on the pic.)
We've looked over this railing many, many times. Neither of us remembered seeing the water look quite like this. So I photographed it and went to Atmospheric Optics to look around for answers. I searched on sky reflections and found one of Les Cowley's posts about Skypools. It was so informative and enlightening. I hope you'll follow the link and take a look. If you don't, here's a bit of what he writes about this:
Skypools are strangely complex. They show sky and land colours but not sky or landscape pictures. They are instead ovals of alternating colour. Some ovals are mostly landscape hues, others are of the sky.This is what happens when we look out our windows or go for a walk, and take a good long look around. It's an ever-changing world of beauty with crazy complex optics!
The complexity arises from the shape of the water surface. Ordinary mirrors are flat, convex or concave. They produce simple and single images. They have a fixed curvature.
In contrast, wavy water even at a single 'frozen' instant changes in its curvature from point to point along its surface. Its troughs are certainly concave at their deepest but the curvature decreases towards the crests passing through an inflection point and then becoming convex. And that is only in one dimension, the curvature alters differently in others.