Thanks for the comments Kees.
I think we call it dead man's hand here in Sweden.
I agree with you about the tropic pictures
There's no challenge taking photos in 30m+ vizibility. You should be up here trying to shoot WA when you hardly can spot your dive buddy a few meters away, now THAT's challenging 
As for diving in Sweden, well, it depends on where you're going. I live in the southeast of Sweden, and if you go here, you will most certainly only go for wreck diving since the Baltic Sea is dead as a doornail in the bottom... (a few grasses here and there but not much excitement to talk about). On the westcoast on the other hand, well, you saw the pictures
Vizibility can range from a just under one (1) meter to up about 20 if you're really lucky. Mostly it's somewhere around 5 on the eastcoast and maybe 10-15 on the westcoast.
/ Patrik