how many pirate captains
 

I am pirate hunting, how many captains are there,

so far I killed 4 on wester isle waters.
peganmo, mad ors, greedy stevens and some dude with black beard,
just don't want to miss any

I was thinking about hunting them too. But I was hoping it will be some quest for it, as for now I didn't get any quest like this. It's a quest this hunting you're making or you are just free-hunter as for other mobs? (i have same captains as you)