Something was wrong in the sandbank, and nothing was wrong at all.
Deep under the warm sand of a riverbank in northern Australia, a clutch of turtle eggs lay finished.
Each hatchling curled inside her own shell was already whole: flippers folded close, pig-like snout tucked, everything a small pig-nosed turtle would ever need to swim, already grown and ready and simply waiting in the dark.
Above them, the dry season stretched on. Sand baked hard in the sun. The river had shrunk to a slow green thread far below the nest, and nothing about that told a young turtle it was safe to come out.
So she waited.
Not because she was too small yet, or too soft, or not finished. She had been finished for some time. She waited because the sand around her was still dry, and dry sand meant a river that had not yet decided to rise.
Days passed under the sand. Then more days.
She could feel almost nothing from inside the shell, only warmth, only the dark, only the small motions of her brothers and sisters curled close around her, waiting the same wait.
Then, far off, thunder she never heard rolled over hills she would never see, and the wet season broke.
Rain fell for a night and a day. The river swelled, climbed its banks, and pushed a slow flood of water up across the sandbank where the nest lay buried.
Water found the sand above her.
It sank down, cool and sudden, through every grain, until it touched shell after shell after shell, and every turtle in that clutch felt the same thing at once.
She began to move.
Not to think it over. Not to wait one more careful day, the way she had waited so many days already. The wet sand itself seemed to say that the waiting part was finished, and something in her simply agreed.
She pushed with flippers she had never once used, and the sand above her gave way, grain by grain, the same way it gave for every sibling pushing beside her in the dark.
Then air.
Grey, rain-heavy air, and the smell of a river wide open at last, and all around her the sand was moving, cracking, rising, as dozens of small dark shells broke free of it together within the same few hours, none of them first, none of them last, all of them simply ready at once.
She had flippers like the great turtles of the open sea, though she had hatched a full river's journey from any ocean, and she used them now the only way she knew, dragging herself down the wet sand toward the water in a scramble that looked nothing like grace and worked anyway.
The river took her in.
Grown, she would stretch about half a metre from nose to tail, carrying a shell soft and leathery instead of hard. She would use her fleshy, pig-like snout to root through the mud for snails and insects, and to catch small fish and the fruit that dropped into the river from the trees leaning over it, and she would breathe through that same snout too, poking it up through the surface like a small snorkel while the rest of her stayed hidden below. She would be the only turtle of her kind left anywhere in the world, the last of a family that time had otherwise closed the book on.
But that was still ahead of her.
For now, she was only a hatchling in the shallows, paddling hard against a current far stronger than she was, surrounded by sisters and brothers who had all been waiting in the dark for exactly this rain.
The sand had held its secret for weeks.
The river only needed one storm to spend it, all at once, all together, all alive.