The Pool Holds Its Lights
Ash dragged a hand across the ribbed sand and felt it buzz under their fingers. The tide had gone far out, and the whole shore smelled of warm salt and bruised seaweed. River swam one loop around their ankles, then stood up in water no deeper than a cup. Ash followed the shine. In a dip between two rocks lay a round pool, and the pool was full of small blue lights, turning slowly, like sparks that had learned to swim. River put their chin on the edge of the water. Ash crouched down so close their breath moved the lights apart.
Then the pool made a small sucking sound. Water slid out through a gap at the low end and ran away down the sand in a thin bright thread. The lights went with it. Ash watched them spread out and fade in the big shallow water, where nothing held them together. "We could close that gap," Ash said. River was already carrying a stone. They swam it over on their chest, the way otters carry everything, and tipped it off beside Ash's knee. It was round as an egg. Ash set it in the gap and reached for another.
The second stone would not sit on the first. It rolled off and thumped into the sand. Ash tried again, propping it, holding it, breathing carefully while the water pushed at both. The round stones wobbled like marbles in a bowl. When Ash let go, the whole little wall came apart at once, and the water found its way out again, cheerful about it. River blew a line of bubbles. Ash sat back on their heels. The pool was lower now, and the lights had drawn in close to the middle. "One more stone, and then we'll see," Ash said.
This time Ash tried sand. They scooped it with both hands and built a fat little bank across the gap, patting it smooth, and for a moment it worked. The pool stopped shrinking. Then the sand went dark all the way through, and the water walked out through the middle of it, grain by grain, until the bank slumped like wet bread. Ash's arms ached. The smell of seaweed had gone sharper and greener with the dark coming on. River climbed out, shook once, and leaned warm against Ash's side while the thin bright thread kept running past their feet.
Ash did not build anything for a while. They looked at the old rock at the edge of the pool, where flat grey slabs lay stacked one over another, each one leaning on the one below. Nothing there wobbled. Nothing there had rolled away in a hundred years. Under the rock's lip Ash found flat stones, thin as plates, packed in dark sand that smelled of rain. River nosed one loose and pushed it over. Ash turned it in their hands and felt how it wanted to lie down rather than roll. "One more stone, and then we'll see."
They worked slowly. Ash laid the widest stone flat across the gap, then a smaller one over its back edge, then another, each leaning in on the last, the way the old rock had taught them. River brought grass and Ash pressed it into every seam. Then wet sand, pushed in with a thumb, over and over, until the wall stopped whispering and went quiet. The water tried the seams and could not get through. Ash waited for the slump. It did not come. River slapped the surface once with a flat paw, and the pool shivered and stayed.
The pool filled. Ash lay down on their belly at the edge with their chin on their wrists and watched the blue lights come back up from the middle, loose and slow, turning the way they had turned before. Some drifted over the new wall and stopped there, caught against the grass, glowing in the cracks. River floated on their back in the middle with all four paws in the air. The sea came in behind them, quiet, smelling of salt and night. Ash trailed one finger through the water and the lights swung round after it like dust in a sunbeam.
After a while Ash climbed onto the warm sandbar and lay down with their cheek on one arm. River crawled up and tucked their whiskery face against Ash's elbow. The pool held its water. The lights turned slower and slower, the way coals settle, and the salt smell went soft and cool. One blue spark drifted up near the new wall and stayed there a long moment. "One more stone, and then we'll see," Ash whispered, already half asleep. The spark dimmed. It glowed once more, small as a pinhead, and then it went out.
