Zoe turned the shell over slowly, tracing each scratch with her thumb. She held it up to her ear, and the low, rushing sound came pouring out. Toby leaned in close, and they both listened.

The tide crept in, quiet as a secret, and lifted the crab back into the dark water. Toby pressed the shell into Zoe's hands and traced one long scratch with his finger. "It looks like a wave," he said — and somehow, it did.

The tiny crab climbed the scratched shell, one careful leg at a time, and reached the top. Zoe and Toby lifted it together — gently, slowly — and set it down inside the moat, where the walls kept the wind out. The crab tucked its claws in, still, as though it knew it was safe.

Toby grabbed his wooden spade and planted himself between the seagull and the crevice. He waved it once, twice — and the bird opened its wings and stepped back. Something about Toby standing there, solid as a small stone tower, made the whole beach go quiet.

Zoe pressed her shell into the dark crack anyway. She felt it scrape — a long, rough sound against the stone. Something about that sound made her stand a little taller.

Zoe looked at the crevice, then at her shell — smooth, pink, perfectly untouched. Something clicked, quiet and certain, behind her eyes. It was the only thing narrow enough, smooth enough.

Toby reached into the crevice, but the rock bit his fingers before he touched the crab. The seagull hopped closer — one step, then another, its yellow eye fixed on something small. It knew exactly where to look.

Back at the sandcastle, something small shifted deep inside a crack in the rocks — a tiny hermit crab, wedged in the jagged dark. A large seagull landed nearby on silent feet, tilting its head the way hungry things do.

Toby stared at the sand where his ice cream had been, his shoulders very still. Zoe broke her cone straight down the middle — a clean, quiet snap — and held out half. Something about sharing made the whole beach feel different, and they both started laughing at the exact same moment.

They walked to the boardwalk, where the ice cream was cold and the planks were warm underfoot. Toby lifted his cone — just one scoop, pale yellow — and then it was gone, slipping sideways onto the sand. It sat there in the sun, going soft and sticky, spreading into a pale yellow puddle.

Toby waved her over, already circling a wide ring in the damp sand. Zoe set her conch shell down carefully and pressed the walls into towers, each one a little taller than the last. Something about building beside someone felt almost like the start of a story.

Zoe came down to the beach holding her pink conch shell, smooth as a secret kept for a long time. The sand was busy with strangers and crying gulls and someone's lost umbrella rolling past. Then she spotted Toby, already digging, already happy, sending small clouds of sand into the bright air.