I was shooting photographs along a muddy tributary of the Chilkat River north of Haines, Alaska, and I noticed a very clear area in the river. After investigating a bit more, it turned out to be a rocky spring coming up through the middle of the river. The strong flow of clear fresh water was rising up in the river making a perfectly clear area about 15 feet in diameter. As I watched the area, Salmon would pass through and stop in the clear spring water for a minute. It was an interesting area.