Glad to see that my photo generated this discussion! Always good to spark someone's interest and curiosity on how a shot is made.

Regarding my thought process when creating the shot, we went to the falls that particular day specifically to show the kids all the salmon jumping. I knew I wanted to try to take some shots but personally wasn't happy with shots at a higher shutter speed as the fish didn't really stand out. So I wondered if it would be possible to blend the sharp-fish shots with a longer exposure to get the water looking the way I wanted. So basically I just took a whole lot of fast shutter speed shots to capture different fish jumping in different positions and then took a couple longer exposures with identical framing (all tripod mounted). I tried a few different locations to get different perspectives on the falls and fish (including one composite I shared in another thread) but this one I liked the best as I thought it was a bit more dramatic in showing the height these fish jump.

Thanks again for the positive comments!