Of course there are fireflies in Europe.

Yes, but during my trips to the United States I was surprised by the abundance of fireflies. I think it was the first time I have seen them in my life.

TIL, and obviously there's a specialist site tracking observations [1]. Thanks, I guess bioluminescent animals are not just a Disney invention! :)

[1]: https://www.inaturalist.org/projects/fireflies-of-europe

Not like in the US. Compared to the symphony of light of peak firefly season in the US, there are indeed no fireflies anywhere in Europe. That is a hill I will die on.

I have seen fireflies outside of Norrköping when I was a kid.

I read somewhere recently that Sweden or Norway or both has/have moose.