Every diver in the cove knew not to go past the reef line after the crystal-light started moving, but Meret had a little brother with a fever that wouldn’t break and a healer who’d said, plainly, that the only cure worth trying was found nowhere a person could simply buy it.
So she went past the reef line.
The turtle was larger than her family’s whole boat, its shell crusted with barnacles that had learned, over some uncountable span of years, to grow in the shape of a single vast crystal — pale green, pulsing faintly, bright enough to see by even this deep. Seahorses rode the current around it in loose, orbiting schools.
Meret didn’t have a plan beyond asking. So she asked — mouthed the words through her mask, more prayer than request, and held up the small woven charm her brother had made her before the fever took his strength to make anything at all.
The turtle’s ancient eye turned toward her, unhurried, entirely unreadable. Then one thin shard split from the crystal’s edge, drifting down through the water like it weighed nothing at all. She caught it against her chest before it could sink past her.
By the time she’d surfaced, swum home, and pressed the shard’s cool light against her brother’s burning forehead, she’d half convinced herself she’d imagined all of it. He opened his eyes an hour later and asked, in a voice steadier than it had been in a week, whether turtles could talk.
Meret said she wasn’t sure. She’s still not, entirely. But she goes back to the reef line sometimes, just to see if the light is moving.