Here's a sleepy walk up the North Umpqua River I took last summer.
The last one had the color filter on. It was tough to get a decent frame while keeping leaves and dirt from floating by without falling in while clinging to a narrow ledge.
If you zoom in, you'll see swarms of fry.
More fish fry. They respond more to movement than sight. They'd scatter as I crept up, but thought nothing of me or my bright orange camera reflecting in the water a foot away (at least once it sat in one spot for a minute).
I was sure I took about 50 pictures of the fish, but only came home with about 15. It's tough to tell when you actually take a picture while shooting with the camera underwater.
Orange and black caterpillar that I fished out of the river. Rumor has it that these are poisonous. They are not. It's a Woolly Bear caterpillar and it will turn into an Isabella Tiger moth. They are pretty interesting.
Mussel bed underwater. And just next to it is...
...the dinner table for a river otter.
Here is some video and a few stills to close this one out.