[Adrian]

Hi Mike,
You need a medical certificate for spearfishing, insurance and the licence. It's around 14 euros for the licence, 20-40 for the medical checkup to get the certificate, and if you already have diving insurance then you are all set. If you risk not getting a licence, and if you do get caught, it's around a 500-600 euro fine with all your equipment confiscated.

You can get licences in Girona or Figueres.

But you don't need a licence just to be the owner of a speargun or to carry it around with you.

What part of the CB will you be visiting?