please help.im at the city and have found both the pirates treasure and the hole in the ground.but cant find any levers or switches..what have i overlooked?

The entrance to the underwater city is not actually near the pirates treasure. Try swimming around the ruins some more and look for another way in.

Wyv

i have found city,underground room to right of city,ruins to left of city,and little cubyhole in the back of city.but no entrance and no switches(although one appears on spirit eye on back of city near cuby hole and one on ruins)please help me get into city

If the cubby hole you mention is the place that looks like an entrance but has sand & debris around it so that you have to wriggle through, go down that corridor & you will find a working switch.

My bad...it is not the one with debris! (That's the one with door hanging on hinges, lol) It is one where you have to swim down into it though, but I think the one near the treasure is like that too.
Hope you found your way in!