Yes, that's what I was thinking. There was a project to build a tidal lagoon in Cardiff [1] that was eventually abandoned, and I don't know about the environme

Yes, that's what I was thinking. There was a project to build a tidal lagoon in Cardiff [1] that was eventually abandoned, and I don't know about the environmental impact. But it had the merit of being ambitious. [1] https://www.bbc.co.uk/news/uk-wales-41213528 https://www.bbc.co.uk/news/uk-wales-41213528