Neap

Neap hadn't always found the beat comforting.

When he was small and new to his shell, he'd wandered too far down the bared flats at low tide, poking at every wonder — and then the water came back. Not slowly, the way he tells it now. To a tiny crab it came fast, a rising cold edge racing up the sand toward him, and he'd frozen, certain the whole sea was coming to swallow him. His little heart drummed against his shell. It's going to cover everything. It's never going to stop.

An old hermit crab, shell crusted with tiny barnacles like jewels, sidestepped over to him as the water climbed.

"First big tide, is it," she said, unbothered, planting herself beside him. "Feels like the end of the world when you don't know the beat yet."

"It's not stopping," Neap whispered.

"It'll stop. It always stops, then it turns and goes back out. Watch the moon, not the water." She nudged him up toward a high crevice, calm as anything. "The sea isn't attacking you, little one. It's just breathing. In, out. The moon pulls it in, the world turns, it slides back out. Once you know the rhythm, the rising water isn't a monster — it's just the tide, being the tide, right on schedule."

They waited it out together in the high crevice, and sure enough, the water rose, and hung, and turned, and went. And the drowning panic in Neap's chest loosened — because the terrifying wall of rising sea had a name, and a reason, and a time it would turn around. It wasn't chaos coming to get him. It was just the beat.

He clambered to DepthQuest at twelve, arriving right at high tide, naturally, because he'd timed the trip.

Marlin met him at the shoreline gate. He didn't test how fast Neap could scuttle. He asked one question. "What are the tides?"

Neap didn't answer straight off. He pointed one claw at the water's edge, then held very still — and a full minute later, the next small wave reached exactly the pebble he'd pointed at.

"They're the ocean, breathing," he said. "The moon's gravity pulls the water toward it, so the sea heaps up in a bulge on the moon's side — and the spinning of the world sweeps that bulge past every shore. High tide, low tide, twice a day, like clockwork. The sun helps too; when they line up you get the big tides, and when they pull sideways you get the gentle ones." He tapped the pebble the wave had found. "It's the one part of the whole wild ocean you can predict to the minute. I'm named for the gentle tides. But I know the whole beat."

Marlin looked at the pebble, wet exactly on time. "You keep the sea's schedule better than my own clock," he said. "You belong here."

Neap's students were often the ones the rising water scared — the ones who'd heard the seas were climbing, and pictured the tide simply never turning back.

One skittered into his workshop, claws clenched. "The sea's getting higher," she said, fast and tight. "The water's coming up and it's not going to stop, it's going to swallow the whole shore—"

Neap knew that clench. He'd frozen just like it once, small on the bared flats.

"Come sit on the rock a minute," he said. "Watch the beat with me." He waited through one slow out-breath of the tide. "There. See it turn and go back out? That still happens. Every day. Now — you're right that the sea's average level is creeping up over the years, slowly, and that people who study the coasts take it seriously, and coastal towns are planning for it, and that's all true and I won't wave it away." He nodded at the retreating water. "But the daily beat still beats. The tide still turns. The change is slow and watched and being planned for — it isn't the tide forgetting how to go back out." He tapped the sand. "And you can't help a shore you've already imagined underwater."

She watched the water pull back down the beach, right on schedule. Her claws unclenched a little.