Supernatural creatures in Norway? (checks watch) Look, how much time do you have?
Several races of beings live hidden in Norway, though the taxonomy is a subject of considerable debate. They’re not exactly easy to study, after all. But you’ve heard of trolls, I bet, right? Okay, we’ll start with trolls. Giants, well, some people say giants are just very large trolls, and some people say they’re a separate race. Never met a giant myself so I wouldn’t want to say. They used to fight the old gods, but since no one much believes in the old gods anymore I don’t know if they’re still fighting.
The nøkk will try to lure you into fresh water - he may be closely related to the fossegrim, who plays his fiddle behind the waterfalls, or maybe he’s the same sort. Too dangerous to get close to. In any case the nøkk can turn himself into a white horse, but if you jump on his back, you’re lost forever to the river. The draug is the creature that tries to pull you into salt water; you’ll see him in whirlpools and eddies, if you’re brave enough.
The huldrer live on land. They’re not the same as trolls, they look much like humans, but if you look closely they have tails, and they’re hollow inside. Mostly we only see the women, and they are beautiful from a distance. They try to lure men to them. If a man can get a huldre woman to come to church and marry him, her tail will fall off, she’ll take on human form, and she’ll be a wonderful wife. But it’s a dangerous game, as she can also draw him into the hidden world.
edited to add: I almost forgot the nisse. He lives in barns and lofts, near people, particularly on farms. If people keep him happy, treat him nicely and give him a big bowl of porridge with lots of butter and sugar every Christmas Eve, then the people and the
farm will prosper. If he feels mistreated, though, there’s no end to the mischief he can make. Best to keep him happy.
In short: don’t wander too far from civilization on your own, if you don’t know what you’re doing. The forests and the highlands have dangers you can’t even see.