If it's a faction that refused The Old gods whispers and power, they may be less developped that the naga we know... Hell, they could be two legged
And there is this guy.
Neptulon is not under the control of the old gods, and this Naga serves Neptulon. Bet there are others like him
http://wowwiki.wikia.com/wiki/Skar%27this_the_Heretic