Seems like a good idea, since smacks of jellyfish have been known to shut down power plants.
[−]akoboldfrying · 2026-10-11 Sun 11:12 UTC ·
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This page started with an amusing name, and just kept getting wilder. 182 million fish per year were expected to die without any protection -- an incredible number, almost 6 fish per second. So now I think "Yes! By all means add some ultrasonic speakers to keep them out!" And then I learn that these speakers will cost £50m... As a part of £700m in total fish protection measures! And that somehow Natural England finds that to be be insufficient!?
I feel like every fish on the Welsh coast could have its own personal concierge for that price.
What probably happened is that £699.993M got spent on corruption and then £7000 on fish protection measures. Capitalism isn't immune to Goodhart's law.
Very nearly half of HS2 - 64 miles - is in tunnels. This happened because the Conservative government was terrified of upsetting the Conservative voters along the route. The bat tunnel was nuts, but it's not that significant overall.
That is partly true but it's a downstream consequence of the ultimate cause. Those running and pushing the project in the early stages desperately wanted it to be a 400+kph route for "prestige" reasons.
If they hadn't been so focused on that, they could have built the new rails largely alongside the existing West Coast Main Line which would have been quicker, cheaper and much less controversial.
But because they wanted those very high speeds, the route had to be flatter and straighter than the existing WCML, which means many more tunnels, longer and more complex construction, more people objecting, inconvenienced etc and ultimately much more cost however you look at it.
Yeah it's more because they wanted the high speed trains to go super fast because bigger number is better, in reality it dramatically increases the impact of the track you build - corners have to be wider, gradients have to be avoided, and offsets (and the land you need to purchase for them) need to be bigger.
Dunno, if you are dumb enough to try to build a high speed line through an area where endangered species are protected then yeah you’re going to have to avoid killing them.
[−]JumpCrisscross · 2026-10-11 Sun 09:25 UTC ·
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It looks like a good idea. It didn’t need to cost £100 million.
How is this a good reality check? This is an AI generated article?
[−]akoboldfrying · 2026-10-11 Sun 10:50 UTC ·
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What a predictably one-sided take from... one of the sides.
Your link claims, technically correctly, that the bat tunnel was not forced by conservationists or wildlife protection laws. What it does not ever admit is that those laws forced something to happen, and that it was already known more than 10 years ago that the least expensive "something" was the bat tunnel.
That link says, under the section "Which other options did HS2 look at?":
> In 2021, a ‘first principles’ review was undertaken by the Department for Transport, DEFRA and Natural England, but did not identify any better solution that was able to both fulfil the requirements of the relevant legislation relating to species protection whilst also reducing cost.
> The most feasible engineering options were also subject to an additional independent design review by the consultants Arup, which concluded that the solution now being taken forward provided the best balance of value for money and risk mitigation, from the four viable options that were shortlisted.
> Choosing any of the other options would have opened-up the risk of legal challenge, delay and subsequent extra cost.
> Options considered included a bored tunnel beneath this area, a shallower ‘cut and cover’ tunnel and rerouting the railway away from the wood altogether. Consideration was even given to permanently slowing down trains as they run past the area.
Regarding my earlier "known 10 years ago" claim, it says:
> The need for the structure was identified by HS2 Ltd more than 10 years ago, following extensive surveying of bat populations by our own ecologists.
Finally, it also says:
> Despite the passing of the 2017 Act, HS2 Ltd still had to gain almost 8,500 environmental or planning consents along the 140-mile route from London to the West Midlands.
8500 consents. Your link claims that other causes, like "underfunding" and "bad project management" are to blame for cost and time overruns, and that environmental consents are being used as a scapegoat. That would be easier to believe if that consent number was, say, two orders of magnitude smaller.
Source? (To be clear, not doubting you.)
https://en.wikipedia.org/wiki/Fish_Disco
I feel like every fish on the Welsh coast could have its own personal concierge for that price.
> The estimated cost of the structure is c. £95 million in 2019 prices. This can also be expressed as £114m in 2022 prices.
If they hadn't been so focused on that, they could have built the new rails largely alongside the existing West Coast Main Line which would have been quicker, cheaper and much less controversial.
But because they wanted those very high speeds, the route had to be flatter and straighter than the existing WCML, which means many more tunnels, longer and more complex construction, more people objecting, inconvenienced etc and ultimately much more cost however you look at it.
Dunno, if you are dumb enough to try to build a high speed line through an area where endangered species are protected then yeah you’re going to have to avoid killing them.
Your link claims, technically correctly, that the bat tunnel was not forced by conservationists or wildlife protection laws. What it does not ever admit is that those laws forced something to happen, and that it was already known more than 10 years ago that the least expensive "something" was the bat tunnel.
Specifically your link says regarding the tunnel:
> HS2 Ltd, a government-owned company, proposed the structure. You can read what they have to say about it here (https://www.hs2.org.uk/building-hs2/environmental-sustainabi...).
That link says, under the section "Which other options did HS2 look at?":
> In 2021, a ‘first principles’ review was undertaken by the Department for Transport, DEFRA and Natural England, but did not identify any better solution that was able to both fulfil the requirements of the relevant legislation relating to species protection whilst also reducing cost.
> The most feasible engineering options were also subject to an additional independent design review by the consultants Arup, which concluded that the solution now being taken forward provided the best balance of value for money and risk mitigation, from the four viable options that were shortlisted.
> Choosing any of the other options would have opened-up the risk of legal challenge, delay and subsequent extra cost.
> Options considered included a bored tunnel beneath this area, a shallower ‘cut and cover’ tunnel and rerouting the railway away from the wood altogether. Consideration was even given to permanently slowing down trains as they run past the area.
Regarding my earlier "known 10 years ago" claim, it says:
> The need for the structure was identified by HS2 Ltd more than 10 years ago, following extensive surveying of bat populations by our own ecologists.
Finally, it also says:
> Despite the passing of the 2017 Act, HS2 Ltd still had to gain almost 8,500 environmental or planning consents along the 140-mile route from London to the West Midlands.
8500 consents. Your link claims that other causes, like "underfunding" and "bad project management" are to blame for cost and time overruns, and that environmental consents are being used as a scapegoat. That would be easier to believe if that consent number was, say, two orders of magnitude smaller.