it's too easy you pull the level on the left.Then you see 3 floors rising from the water
you jump you go to poseidon's wife but this is meaningless as the only thing you have to
do is to pull the level jump in to the water and swim to the base of the last floor there,
you 'll find an entrance and that's all.If you see carefully to the starue you 'll see
it's finger showing the way out in the water!

you just pull the lever in the back and go to the last one and dive under water to find
the hole