What is the title of this Book about pirates?

Question:

What is the title of this Book about pirates?

I forget the name. I saw it in the teen section of a Barnes and Nobles. It's about a girl who can walk on water and is called a polliwog or something. Can you help please?

Best Answer - Chosen by Asker: It's called Pirate Curse by Kai Mayer. Looks like it's part of a series called The Wave Walkers. It looks pretty cool!

Here's the book's page on Amazon:
http://www.amazon.com/pirate-curse-wave-...

Cheers!! :)