Kill 10 Daggerspine Shorehunters and 10 Daggerspine Sirens for Lieutenant Farren Orinelle in Southshore.
My former mentor in the Stormwind city guard sent a message to me that Alliance High Command is becoming concerned with the threat posed by the naga. From what he's heard, there's good chances for promotion--or at least reassignment--for anyone who proves valuable in this regard.
There's just one small problem... I can't handle the naga, [player]. Oh sure, I could break up a drunken barroom brawl, or haul off a belligerent beggar, but the naga are too much for me. You've got to help me, [player]!