When she opened her eyes, the pool had begun to ripple. A tiny stream, no wider than her wrist, trickled over the edge of the basin and began to wind its way down the white slope. Behind her, Kael gasped. The stream was growing. It was finding its way toward the lowest point of the valley, carving a new path through the salt.

The journey took seven days. The cartographer, whose name was Kael, taught her to read the stars as if they were tide charts. She taught him to find water in the hollow bones of dead beasts and to listen for the underground rivers that whispered in a language older than words. At night, she dreamed of the pressure again, and this time she saw shapes—vast, shadowy forms that moved with a grace no land creature could possess.

“There’s nothing there,” the elders scoffed. “Just the salt flats and the singing dunes.”

The village elders laughed at her. The sea was a myth, they said. A story for children. But Yosino remembered a time before memory—a wet, dark pressure against her skin, a rhythm like a second heartbeat. She kept this to herself, along with the spiral-shaped fossil she’d found in the dry riverbed, which she wore on a leather cord around her neck.

“Call me Yosino of the Tide,” she said. “And bring the village. It’s time they learned to swim.”