The river is flowing full of leaves right now... thanks to the trees that are beginning to shed their colorful garb.
I love to watch the falling leaves make a few ripples when they splash down. Often the leaves will then skate around a bit on the surface when it's windy. Eventually the leaves sink... I've seen many leaves cruising along well below the surface, or collected in bunches on the bottom.
When I see floating leaves, I think about the leaf-processing chain that is about to begin its work on the leaves. When leaves fall into a stream they supply an important source of energy for the stream's ecosystem.
leaves that end up in the water, become a food source for bacteria and fungi, then shredding and filter-feeding aquatic insects, which, in turn, are eaten by the fish.
Leaves live a colorful life.