Moss and Rocks in stream

Please critique. I think the green stuff is moss but I'm not sure. I

was returning from a hike around Jenny Lake in Grand Tetons NP when I

noticed this while crossing a bridge. What do you think? Thanks.

Hair Algae - I fight it every year about this time in my fish tank.

Nice shot - my ONLY quibble is that TO ME - it's upside down. I would rather have the flow top right top bottom left. Maybe because people read DOWN the page.

5/5