Hey I feel like a moron here but how do I get back to Port Town? I found the underwater city but investagate. My char's all stuffed with goods and I need to change a few classes but I have wondering around and still no luck. I know its possible cause I can finish the leprakun quest. Can someone give me a hint about this.

If you are in the Lost Sea then there are only two ways back to Brimloch Roon.
1: The 'Call of Home' spell. Especially useful if you have 'Create Teleport' / 'Teleport' as well so you can get back to where you came from easily.
2: Slogging back through the Temple of Isis. Easy, but tedious. Especially as you have to slog your way through it in the opposite direction to reach the Lost Sea again.

Moral: Get the three Teleport spells before you tackle the Lost Sea!