Tidebreak

Chapter 1: Dead Water

The coral was dying, and Zoe Kellaway was running out of reasons to care about anything else.

She leaned over the gunwale of the banca and stared down through the gin-clear water at what remained of the reef flat. Bleached staghorn colonies spread across the seabed like the bones of some enormous hand, white and brittle and already furred with algae. Three months of elevated sea temperatures had done this. Three months, and a decade of recovery erased.

She pulled her mask down, bit the regulator, and rolled backward off the side.

The water closed over her with the familiar compression of silence. She descended slowly, equalizing every two meters, her fins barely moving. At twelve meters she reached the reef wall and began her transect, dragging the measuring tape behind her and logging every colony she passed on the waterproof slate strapped to her forearm.

White. White. White. Partial bleaching on a massive Porites colony—maybe ten percent live tissue remaining. White. Dead and overgrown. White.

She'd been at this for six weeks now, working a grid pattern across the reefs surrounding Isla Maragat, a speck of volcanic rock in the Sulu Sea that most maps didn't bother to name. The Philippine government had granted her a research permit. The University of Queensland had given her a modest stipend that barely covered fuel and rice. Her department head, Professor Lachlan Gould, had told her with genuine sympathy that the funding climate was "challenging" and that she should "view this as an opportunity for lean, impactful fieldwork."

Lean. That was one word for it.

Her team was herself. Her lab was a plastic folding table in a rented nipa hut. Her research vessel was a twenty-foot outrigger banca with an engine that sounded like a sewing machine having a nervous breakdown, piloted by a sixty-year-old fisherman named Tito Jun who spoke three words of English and communicated primarily through cigarette smoke and shrugs.

She finished the transect and hovered at the wall's edge, looking out into the blue void beyond. The dropoff fell away into darkness—two hundred meters, maybe more. Somewhere down there, in the cold upwelling, there might still be healthy coral. But she didn't have the equipment for technical diving, and even if she did, nobody was paying her to find hope. They were paying her to document loss.

She ascended slowly, made her safety stop at five meters, and surfaced into the blinding afternoon.

Tito Jun was sitting in the stern, smoking, his leathery face tilted toward the sun. He didn't look at her as she hauled herself aboard.

"Wala," she said. Nothing.

He shrugged.

She peeled off her wetsuit and sat on the bench in her rash guard, letting the wind dry her skin. The slate was covered in shorthand—species codes, percentages, GPS coordinates—but it all told the same story. Ninety-three percent bleaching across the survey area. Consistent with every other reef she'd checked in the region. Consistent with the models. Consistent with the slow-motion catastrophe that had become her entire professional life.

Zoe was thirty-two years old. She'd published eleven papers, given keynote talks at three international conferences, and been quoted in the Guardian twice. None of it had saved a single coral.

She opened her waterproof case and pulled out the laminated chart she'd been studying for the past week. The Tubbataha Reefs were too far south and too well-monitored for her purposes. She needed somewhere off the beaten path—somewhere the bleaching might not have reached, or where recovery might be happening faster than the models predicted. Somewhere that could give her data worth publishing.

Her finger traced the scatter of atolls northeast of Isla Maragat. Most were unnamed. Some were barely above water at high tide. But satellite imagery from six months ago had shown something interesting at one of them—a patch of color in the shallows that didn't match the surrounding bleached-white signature. It could be algae. It could be an artifact of the imaging. Or it could be live coral, thriving where it had no business thriving.

She tapped the spot on the chart. "Dito," she said to Tito Jun. Here.

He leaned over, looked at the chart, and frowned. He said something in Tausug that she didn't catch, then switched to Tagalog.

"Malayo," he said. Far.

"Forty kilometers. We can make it in three hours."

He shook his head and said something else she couldn't follow, but she caught the word "alon"—waves—and "hangin"—wind. He pointed at the sky, where a line of cumulus was building to the west.

"Tomorrow," she said. "Bukas. Early. Before the wind."

He looked at her for a long moment, then shrugged.

They motored back to Isla Maragat in silence, the banca slapping across the chop. Zoe sat in the bow with her knees drawn up, watching the island grow from a dark smudge to a green hump fringed with white sand. The village of Sitio Bato clung to the western shore—thirty houses on stilts, a concrete pier, a church with a tin roof, and a sari-sari store that sold warm Coke and canned sardines.

Her hut was at the edge of the village, close enough to hear the karaoke that started every night at seven and didn't stop until the generator ran out of diesel. She'd learned to sleep through it. She'd learned to sleep through a lot of things.

That evening she sat at her folding table and uploaded the day's data to her laptop. The spreadsheet was a cemetery of numbers. She wrote a brief email to Lachlan: "Survey area 7 complete. 93% bleaching. Heading to an unnamed atoll NE of Maragat tomorrow to investigate anomalous satellite imagery. Probably nothing. Will report back."

She almost didn't send it. What was the point? But professional habit won out, and she hit the button just before the satellite internet connection dropped, as it did every evening around eight.

She ate cold rice and tinned mackerel, drank a bottle of San Miguel, and went to bed listening to someone in the village murder a Celine Dion ballad.

Sleep came slowly. She lay on the thin mattress under the mosquito net and thought about the satellite image. That patch of color. It was almost certainly nothing—a sensor glitch, a bloom of Sargassum, a trick of light and water. But she'd been doing this long enough to know that the ocean still had surprises in it, and that surprises were the only thing that kept her going.

She woke at four, before dawn, and found Tito Jun already at the pier, smoking. The banca was fueled and loaded. He'd brought extra water and a coil of rope she hadn't asked for. He looked at the sky—clear, stars fading—and nodded once.

They cast off into the dark.