[http://youtu.be/l9qA8c-E_oA] (YouTube link)John O...  ...8c-E_oA] (YouTube link)John Oliver discovered the salmon cannon , invented to help salmon cross manmade barriers on their way upstream to t...  ...monstrates some of the great targets you can fire salmon at. Hint: he fire...

Once upon a time, salmon swam upstream to spawn on their own with no real...  ...so high that wildlife agencies have been trucking salmon around the barriers.[http://youtu.be/kICS32kady4]...  ...u.be/kICS32kady4] (YouTube link)But now comes the salmon cannon from the appropriate...