Starting to see chunks of ice in the water. Freezing!!
Judging by the colors, I used a circular polarizer I bought cheap off eBay. It came with a tube mount for the A80 along with the circular polarizer, UV haze, and fluorescent white balance filters. I guess it was good for me to learn how to use a polarizer filter and buying those filters taught me a major lesson: don't cut corners when buying filters. Those filters I had weren't coated so light would sometimes bounce off the camera, into the filter, and into the shot. Glad I learned that lesson with those cheap 52mm thread filters instead of the more expensive 72mm thread filters.