is there a "ban on shooting tourist with speargun"? Sorry, but I found that funny.
I have mixed emotions about tourist with spear guns, its a legitimate sport and I'm sure some serious guys in it, i wouldn't want to be negative towards them, but imagine giving the tourist population spearguns and letting them loose on the reef. They shoot the slow colourful stuff and then miss and destroy coral if they don't miss and shoot another tourist, just a sick nightmare.
If it where regulated and enforcible it could be great to have it here but that's the problem, nothing is regulated and enforcible around here that I've noticed.