Hi Sjurba
Where are you planning to go?
The more likely and popular pelagic to spear in Denmark are cod, grey thick lipped mullet and sea trout.
Assuming you don´t have a boat.
Cod: Along stone jetties , aspetto or in holes between the stones. Spot and shoot from the surface is also possible, but that you know.
Mullet: In the shallow see weed forrest, 0,3m - 3m, extreemly quitely floating along with the current. Be lucky and spot em with the arse up or maybe swimming higher up in the water column. Stay alert with the arm stretched and the finger on the trigger, because when it spots you its gone. In schools they tend to be more curious and derry; alone they are extremely shy.
And btw: Make sure your spear tip is sharp, and that you have a descent shooting power, cause the mullet has tough scales. Kill it by braking the neck backwards. Don't try knifing it and also mind the thick spike on the dorsal fin; getting that in your hand hurts (believe me ;-).
Sea trout: Even more sky than the mullet. Be lucky and spot it why aspetto fishing in one of the above places. Usually on the move so be ready to track it. You can also go night fishing for trout. Much easier.
Please mind that you need a fishing license, which you can
buy online. Not that you are likely to get caught without, but because the money help supporting the attempt to limit illegal fishing, and its really cheap btw
Please also mind
minimum sizes and
protected areas.
Best regards
H!