Bat tunnel is real, it cost millions. The others riffs on the theme I expect
The "fish disco" for the Hinckley Point C nuclear power project is also real and cost millions.
https://en.wikipedia.org/wiki/Fish_Disco
alt Hacker News
The "fish disco" for the Hinckley Point C nuclear power project is also real and cost millions.
https://en.wikipedia.org/wiki/Fish_Disco