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- Fish cannon
- A wet, flexible pneumatic tube uses air pressure to suck in salmon one at a time and gently shoot them out into the destination water. The system was originally designed by Bellevue, Washingtoncompany Whooshh to safely move apples.
Bonneville Dam on the Columbia River - You can tour the dam and from inside there are windows to watch fish travel up the ladder. They seasonally recruit people to monitor and count to get a rough estimate of fish population. You can also watch from above. It’s amazing.
The Ballard Locks fish ladder in Seattle is pretty dope: https://citybop.com/seattle/ballard-locks-fish-ladder
