A Hole in the Sea - Weather Caster Saga, #2

Survive the Sea, protect The Compass. The beautiful and devious Lady Vasille lures Parsifal and his loyal friend, Balder, into the mythical Sea, where darkness and terror await. Evading hungry mermaids and depraved pirates, they seek sanctuary on a floating city of wreckage. But it is only the beginning-fighting for survival in the tightening web of Lady Vasille's machinations, they find that nightmares roam this wild seascape, threatening even their steadfast friendship.
Parsifal will have to face not only Vasille and the dark denizens of the Sea, but himself. What will he sacrifice?