You have a way of absorbing your reader, drawing them into the nuance of the moment. This was truly engaging to read, even though I have never been cray fishing. On the other hand, I know with absolute certainty, I would have returned it to the stream from whence it came!
Wow, I love this! Once again, I love the simple look at the beauties in the outdoors. As I read, I could hear the water going over these stones. The line about the stream's anatomy is just brilliant! I love thinking of it in that way, like a body, every moving and fluid as it naturally is... Also, you ended it beautifully: "and I am still here, turning stones." The rhythm and phrasing, as always with your writing, were perfect! Nice, easy-going, peaceful piece to read.