Octopus catches plunge 90% in 10 years — 5ch: “If the octopus-pot factories go under, Akashi is finished”

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The story

Octopus are disappearing from the Seto Inland Sea. According to an article from Shueisha Online, catches in Akashi and surrounding areas have plummeted 90% over the past decade, a decline that’s even driving up prices at takoyaki shops. The article also points to young people suspected of poaching, drawn by the idea that “a luxury ingredient like octopus is there for free.” On 5ch’s News Speed+ board, the thread split between those blaming overfishing and those pointing to environmental shifts like rising sea temperatures and cleaner wastewater, with the discussion spiraling into debates over fisheries resource management and catch-quota policy.

“We can’t catch octopus!” Catches down 90% in 10 years, takoyaki prices rising too… “Don’t you dare take over this job!” — the anguished cry of Seto Inland Sea fishermen, while some young people chase octopus amid “poaching suspicions” over a “free luxury ingredient”

Published 11/10 (Tue) 17:12

Shueisha Online

Source: news.yahoo.co.jp / Original article here

What people said

8AnonymousNov 11, 2026 03:07
If the octopus-pot factories go bankrupt, Akashi is done for
11AnonymousNov 11, 2026 03:08
Re: #8
It's because taxes are too high.
It's the civil servants' fault.
14AnonymousNov 11, 2026 03:08
Hurry up and develop aquaculture tech already
18AnonymousNov 11, 2026 03:10
Re: #14
I'd rather my taxes went to stuff like this than civil servants' salaries.
53AnonymousNov 11, 2026 03:22
Re: #14
That's already possible.
They just end up cannibalizing each other.
16AnonymousNov 11, 2026 03:09
It's because you guys overfish them
150AnonymousNov 11, 2026 03:59
Re: #16
Exactly. I think so too.

When there's a catch to be had, Japanese fishermen will fish it to extinction.
No matter how many times they repeat the same mistake, they never learn.
21AnonymousNov 11, 2026 03:11
Why do they keep fishing until it goes extinct? Isn't anyone farming them?
24AnonymousNov 11, 2026 03:12
Re: #21
It's global warming.
Even farmed ones can't survive, it's too hot.
31AnonymousNov 11, 2026 03:14
Growth? Unlike squid, which take several years…

Re: #21
Octopus spawn and grow within a single year.
28AnonymousNov 11, 2026 03:14
Then that'll solve the labor shortage somewhere else.
Happy ending.
36AnonymousNov 11, 2026 03:16
Re: #28
For labor shortages, just lay off some civil servants.
29AnonymousNov 11, 2026 03:14
Numbers are dropping — aren't they overfishing?
33AnonymousNov 11, 2026 03:15
Re: #29
Mauritania (a major octopus source Japan imports from)
35AnonymousNov 11, 2026 03:15
Sure, it's easy to blame everything on global warming and rising sea temps.
But doesn't anyone reflect on this scorched-earth style of fishing?
Like icefish (ikanago) in the Kansai region —
Isn't overfishing the small fish that support the whole ecosystem the real culprit?
37AnonymousNov 11, 2026 03:17
Re: #35
Ikanago (icefish)

If you go and hunt down
juvenile wrasse too

well, that's extinction for you.
45AnonymousNov 11, 2026 03:19
If it's down 90%, that just means they overfished, plain and simple.
They ate through the resource ahead of time and strangled themselves.
62AnonymousNov 11, 2026 03:25
Re: #45
In the Seto Inland Sea, you can't even blame China or Korea for this one.
92AnonymousNov 11, 2026 03:40
Re: #88
People have less cash on hand because of taxes,
so businesses struggle and go under.
The only ones taking in more from taxes than they pay are civil servants.
100AnonymousNov 11, 2026 03:42
Re: #92
Makes no sense.

We're talking about octopus here.
118AnonymousNov 11, 2026 03:48
Re: #92
If you earn under 6 million yen a year, the benefits you get from taxes outweigh what you pay in.
107AnonymousNov 11, 2026 03:44
They're overfishing shirasu (whitebait) too
114AnonymousNov 11, 2026 03:46
Re: #107
Shirasu —

baby fish (fry) of Japanese sardine, anchovy, round herring, and similar species.
122AnonymousNov 11, 2026 03:49
Re: #107
The catch-quota system just doesn't really function in Japan.

That said, if you lean too hard into quotas,
you end up with big capital monopolizing things like in Iceland,
so finding the right balance is tough.
119AnonymousNov 11, 2026 03:48
It's probably the result of climate change plus years of overfishing.
124AnonymousNov 11, 2026 03:50
Re: #119
I think the main reason is the sea got too clean, so there's no food left for them.
195AnonymousNov 11, 2026 04:13
I remember hearing a few years back that octopus numbers used to be boosted by nutrients from household wastewater runoff — sewage and all — but then people started calling it "environmental destruction," so everyone worked hard to clean up the wastewater, and the water got so clean that octopus started declining.
Is that still happening?

Or are they even getting poached now too?
215AnonymousNov 11, 2026 04:23
Re: #195
I hear that theory a lot, but I don't think it's right.

The cause isn't the sewers —
it's herbicides from rice paddies and farm fields.
Those run off into the sea and damage the ecosystem.
218AnonymousNov 11, 2026 04:25
Re: #215
When the mountain environment changes, the rivers change too,
and in the end it affects the sea as well.
230AnonymousNov 11, 2026 04:30
Re: #215
Japan's pesticide usage is seriously one of the highest in the world~
234AnonymousNov 11, 2026 04:33
The shocking fact that "we can't catch fish" only applies to Japan, worldwide
https://tk.ismcdn.jp/mwimgs/e/0/500m/img_e0337453cdb4cf21b822fdaf905df04a220112.jpg

Japan is the only country in the world where catch volumes are declining.
It's not "China's fault" or whatever — it's just a lack of resource management.
No wonder nobody trusts Japan, what with the dolphin and whale hunting too.

Background and Key Points of This Discussion

Octopus fishing in the Seto Inland Sea is known for traditional methods like Akashi’s “octopus-pot fishing,” closely tied to the local takoyaki culture. The reported figure of a “90% decline over 10 years” is said to stem from a tangle of factors — overfishing, rising sea temperatures, food shortages caused by cleaner wastewater, and herbicide runoff — making it premature to pin the blame on any single cause. The thread itself split between an “overfishing” camp and an “environmental change” camp, with theories ranging from improved sewage treatment making the water too clean (reducing the plankton octopus feed on) to herbicide runoff from farmland, without ever settling on one answer. Some pointed out that Japan’s catch-quota system isn’t functioning properly, while others worried that tightening quotas too much could let big capital monopolize the fishery instead — a structural dilemma that simple regulation won’t easily fix. A few posts also veered off-topic into criticism of civil servants.

*This article is excerpted and summarized from the 5ch (News Speed+) thread “[It’s Over for Akashi’s Octopus] We Can’t Catch Octopus! Catches Down 90% in 10 Years — Seto Inland Sea Fisherman: “Don’t You Dare Take Over This Job!” — Some Young People Chase Octopus Too.”

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