Makai Queen by Tara Fairfield
Off the coast of Lanai, far beyond the sailboats, there is a hidden world beneath the beryl-blue sea, the marvelous kingdom of Moku-ola, a place where man and beast live in harmony. Unknown and forbidden to those living above the surface, it has never been discovered….until now.
Tessa, a curious teenager with a taste for adventure roams the sandy beaches of Lanai. Feeling lost and hurt she longs for meaning and a place in this world. By chance, Tessa encounters a mysterious man who appears to be drowning. The attempted rescue puts her own life in danger as she is abducted and dragged out to sea.
Far beneath the oceans surface, Tessa is brought to the frightening and wondrous land of Moku-ola. As the dangers of this world threaten her very survival, Tessa must overcome the barriers of self-doubt to discover the keys to her royal destiny.