this post was submitted on 04 Jun 2025
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Today I Learned

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Forget fish ladder, they’re building a whole river! Lol

Basically The Netherlands built the Afsluitdijk dam to protect against flooding from the North Sea, but it blocks off the migratory path for fish seeking freshwater to breed. The Fish Migration River is being built to correct that. It’s projected to be completed by the end of 2026 and will be both a nature reserve and UNESCO site.

More reading: https://www.holland.com/global/press/news-resources/fish-migration-flow-at-the-afsluitdijk

2 min video animation for how it works: https://youtu.be/rduAVvQY0lE

top 23 comments
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[–] DearMoogle@lemmy.today 26 points 2 days ago* (last edited 2 days ago) (1 children)

I just learned about this after exploring the Fish Doorbell website (which is a really cool and cute visit actually, super recommend). It was mentioned in their Fishdoorbell news report:)

[–] grue@lemmy.world 3 points 1 day ago (1 children)

I hope the lock operator double-checks the footage instead of just trusting the Internet.

Nobody on the internet would misrepresent the truth

[–] pruwybn@discuss.tchncs.de 21 points 2 days ago (2 children)

I'm sorry but Afsluitdijk sounds like they named it by banging on a keyboard.

[–] DosDude@retrolemmy.com 7 points 1 day ago (1 children)

It means closure dyke. If you want keyboard banging, go check the name of the vulcano in Iceland.

[–] JusticeForPorygon@lemmy.blahaj.zone 3 points 1 day ago (1 children)

I was gonna say no way that's a real thing they can pronounce

[–] RobotZap10000@feddit.nl 9 points 1 day ago

Afsloutdike. We like to mix and match vowels here to create exciting new pronunciations!

[–] hakunawazo@lemmy.world 1 points 1 day ago

In a few years whole of The Netherlands will be a fish migration sea.

[–] Stillwater@sh.itjust.works 8 points 1 day ago (2 children)
[–] Madison420@lemmy.world 6 points 1 day ago

The Dutch national motto is "Fuck you nature watch this!"

[–] Zirconium@lemmy.world 2 points 1 day ago

Alfusaipond dam

[–] infeeeee@lemm.ee 4 points 1 day ago (1 children)

Fish ladders are common things on dams nowadays. The only speciality I see here it's between sea and a lake.

[–] grue@lemmy.world 8 points 1 day ago (1 children)

Also, IIRC fish ladders don't actually work all that well, which is why fish cannons are the new "in" thing these days. (See also: https://99percentinvisible.org/episode/fish-cannon/ , https://www.whooshh.com/ -- yes, that's the real name/website of the company that makes the thing, LOL)

Seems like this project, "with a length of four kilometres and a spiral structure that simulates gently sloping water currents" (according to the "more reading" link), is a different approach to correcting the inadequacies of normal fish ladders.

[–] GluWu@lemm.ee 3 points 1 day ago

I've only seen those used for salmon because those are large fish that make a concentrated seasonal migration in from the ocean. Fish ladders are fine for other species that are smaller and inhabit the river year round.

[–] Lost_My_Mind@lemmy.world 3 points 2 days ago (4 children)

TIL "The Netherlands" is a country. I thought it was a region. Like how "North America" is 3 countries.

[–] tal@lemmy.today 6 points 1 day ago (1 children)

Like how "North America" is 3 countries.

North America also includes a number of countries south of Mexico, Greenland, and some countries in the Carribean.

[–] FundMECFSResearch@lemmy.blahaj.zone 3 points 1 day ago* (last edited 1 day ago) (1 children)

I think in the US (and english speaking parts of Canada) they have a weird conception that “North America” doesn’t include “Central America”.

But the rest of the world seems to agree that: North America = Central America + US, Canada, Mexico

and South America = Anything south of Panama on the American continent

[–] tal@lemmy.today 2 points 1 day ago* (last edited 1 day ago)

I think in the US (and english speaking parts of Canada) they have a weird conception that “North America” doesn’t include “Central America”.

I'm in the US, and that's certainly not how the US classifies things.

Some countries, like Spain, use a continent model with fewer continents, where there is no North America or South America, just one very large continent, "America".

https://en.wikipedia.org/wiki/Continent#Number

  • The seven-continent model is taught in most English-speaking countries, including Australia,[43] Canada, the United Kingdom,[44] and the United States, and also in Bangladesh, China, India, Indonesia, Pakistan, the Philippines, Sri Lanka, Suriname, parts of Europe and Africa.
  • The six-continent combined-Eurasia model is mostly used in Russia and some parts of Eastern Europe.[45][46]
  • The six-continent combined-America model is taught in Greece and many Romance-speaking countries—including Latin America.[37]

I'd guess that they might not be familiar with where the division occurs.

[–] NigelFrobisher@aussie.zone 5 points 1 day ago

The Low Countries is several countries, comprising The Netherlands, Belgium and Luxembourg. That might be what you were thinking of.

[–] Ephera@lemmy.ml 5 points 1 day ago* (last edited 1 day ago)

You might be thinking of "Holland"? The Netherlands is sometimes informally referred to as "Holland", but that's also a region within the Netherlands:
Map of the Netherlands with its regions, including North Holland and South Holland

[–] Visstix@lemmy.world -2 points 1 day ago (1 children)