"Sir?" Harry threw his hand up and Lockhart nodded at him, "Why would you "deal" with a Naga. They run in tribes and most don't go out in the world especially alone. Killing one Naga would bring the whole tribe on your head and the Ministry of Magic in Italy for distupting the fragile peace they have with the Naga's. Also Sirens are rarely found in the Caribbean unless someone goes and seeks them out merely to kill them which might I remind you is expressly illegal."