I’ll tell you where the city is. I’m not all that concerned about it, because you’ll never get there. It’s ten thousand feet down. Even if you could breathe underwater, you’d be crushed at that depth. The merpeople can do it because they’re magic.
I’ve heard the stories same as you. But take it from me: there’s nothing down there for you but death. But, hey, you’ve got a boat, and plenty of gold, and a thirst for more. You’re going to do what you’re going to do. I’ll mark it on the map. But you’re paying me up front.