- 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.
this post was submitted on 19 Jun 2025
63 points (100.0% liked)
Wikipedia
3386 readers
170 users here now
A place to share interesting articles from Wikipedia.
Rules:
- Only links to Wikipedia permitted
- Please stick to the format "Article Title (other descriptive text/editorialization)"
- Tick the NSFW box for submissions with inappropriate thumbnails
- On Casual Tuesdays, we allow submissions from wikis other than Wikipedia.
Recommended:
- If possible, when submitting please delete the "m." from "en.m.wikipedia.org". This will ensure people clicking from desktop will get the full Wikipedia website.
- Use the search box to see if someone has previously submitted an article. Some apps will also notify you if you are resubmitting an article previously shared on Lemmy.
founded 2 years ago
MODERATORS
VIVA THE FISH LATTER
all dams should have them and all fish should be free to move the water that is their home
Problem is that predators have learned to wait at the entrance and exit for easier meals
the predator factor is acceptable
the salmon that make it through will create hundreds of new salmon.... even if only half made it beyond the ladder to reproduce, it's better than none
There's "vs no ladder" but there's also "vs no dam"
hydro electrics are a necessary
but not all dams are created equal. Bad dams need to go
The Ballard Locks fish ladder in Seattle is pretty dope: https://citybop.com/seattle/ballard-locks-fish-ladder
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.
There's a great video on this subject by the creator of the youtube channel "practical angineering".