On the Shell of Storms

A dying sea turtle carries the only chart to a sunken vault no one has opened in a thousand years—and its heartbeat is fading. Captain Maren Doss, a disgraced navigator with nothing left to trade but her skill, assembles a desperate crew to follow the ancient creature across treacherous waters before its shell goes dark forever. Rival hunters close in, monsoons shatter their course, and the ocean itself seems determined to bury what was never meant to be found.