Bubbles at the weir

Saw the sun today! Also I saw this little weir under the bridge along the track I often walk on. Today a walked to the left of the bridge which I hadn't done before and saw this. On the way back I noticed a swarm of bees in a bush and took a photo but wasn't game to get close enough for it to be in any way remarkable. It was also blurry as the bees were in constant motion.