There is a cannon that shoots salmon over dams.
It’s awesome. Check it out.


This is such a rad video.

Fish passage is a big deal in the hydro engineering world. This salmon cannon made big news a while ago when it came out, but it's not the only inventive solution. One of my friends and coworkers, Ryan Greif, designed a decompression chamber for fish called the Decompression Raceway (http://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1492&context=fishpassage_conference)