Any combination between dark and water can give you Pirate dragon:
Neon+Nenufar, Zombie+Mud, Rattlesnake+Lanternfish dragon, Neon+Waterfall...
To get the pirate dragon you must breed a dark dragon with a dragon with water and another element in order to get a pirate dragon.
how to breed pirate dragon
breeding pirate dragon and scoccer dragon on dragon city
you breed sarah and teddy now you can get a pirate dragon
legendary dragon and dark
petroleum and water
water and dark
pirate or petroleum dragon
how do you get a pet hourse on pirate 101
water and dark
petroleum waterfal
to become a pirate you have to talk to a pirate near the sea and talk to him and click on become a pirate.