The Toxic Algae Bloom

The heat radiating off the asphalt parking lot warped the air into a shimmering mirage. It was 104 degrees. Kiana wiped sweat from her forehead with the back of her wrist, ignoring the grit of sand that stuck to her skin. Her phone buzzed in her back pocket. The screen was cracked down the middle, distorting the time: 2:14 PM. She had been standing at the edge of the waterline for forty minutes, staring at the Pacific Ocean.

She uncapped a plastic sample vial. The lid had a chewed edge from where her dog had gotten to it last week. She waded in up to her shins. The water was not the usual murky green or deep blue. It was a dark, bruised rust color. It clung to the fine hairs on her legs.

Kiana dipped the vial. The liquid inside didn't just swirl; it seemed to clump, sticking to the plastic walls. She held it up to the harsh summer sun. Tiny, fibrous strands drifted in the water, twitching against the current. Not floating. Swimming.

"You're telling me you drove all the way down here just to stare at dirty water?"

A voice broke her concentration. Kiana turned. Brody was jogging down the slope of the beach, a bright yellow fiberglass surfboard tucked under his right arm. He wore faded boardshorts with a ripped hem. His chest was red from the sun.

"It's a localized dinoflagellate bloom," Kiana said. "And it's acting weird. I wouldn't go in if I were you."

Brody laughed. He tossed his board onto the wet sand and stretched his arms over his head. "It's a red tide, Kiana. We get them every August. It just smells bad. The waves out by the sandbar are actually firing today. Three feet and glassy."

"I'm serious, Brody. Look at it." Kiana shook the vial. "The viscosity is wrong. It's too thick. The water temperature is pushing eighty-two degrees. That's a breeding ground for neurotoxins."

"Nerd," Brody said, grinning. "I'll catch three waves and come back. Just watch my stuff."

He didn't wait for an answer. Brody grabbed his board by the rails, sprinted through the shallow foam, and dove flat onto the fiberglass. He paddled hard, his shoulders churning the rust-colored water.

Kiana sighed. She screwed the cap back onto the vial and walked up the slope to where her beach towel lay next to a cooler. Her younger sister, Lily, sat under a faded canvas umbrella, furiously jabbing at a handheld gaming console. Lily's chin was sticky with melted cherry popsicle.

"Did Brody go in?" Lily asked without looking up from her screen.

"Yeah. Because he doesn't listen," Kiana said. She dropped the vial into the cooler, letting it rest against a bag of melting ice.

Out on the water, Brody reached the lineup. He sat up on his board, straddling it, waiting for a set. The ocean looked heavy. The rust-colored algae slick stretched for a hundred yards in every direction.

Kiana watched him through a pair of cheap plastic sunglasses. Her stomach tightened. Something was wrong with the surface tension of the water. When a wave rolled through, the crest didn't break clean. It sludged over, heavy and dark.

A larger set wave built on the horizon. Brody spun his board toward the shore. He dug his arms into the water, matching the speed of the swell. The wave jacked up, pitching forward. Brody popped to his feet, perfectly balanced. He carved down the face of the wave, dragging his hand along the wall of water.

Then the wave closed out.

It didn't just break; it collapsed entirely. A massive lip of dark water slammed onto Brody's back. The bright yellow board shot out from under him, flipping into the air. Brody disappeared into the whitewater.

Kiana stood up. She took off her sunglasses.

Ten seconds passed. Fifteen. The board bobbed to the surface, attached to Brody's ankle leash, but Brody didn't come up.

"Come on, idiot," Kiana muttered. Her heart hammered against her ribs.

Finally, a head broke the surface in the shallow water. Brody. He was on his hands and knees in the shorebreak, coughing violently.

Kiana jogged down to the water's edge. "Brody! Are you okay?"

He didn't answer. He was retching. Thick, rust-colored water spilled from his mouth onto the sand. It didn't soak into the dry earth. It sat on the surface, bubbling slightly.

Kiana reached him and grabbed his shoulder. His skin was freezing cold despite the brutal heat.

"Brody?"

He snapped his head up. Kiana stepped back, her breath catching in her throat.

Brody's eyes were completely bloodshot, the whites stained a dark, muddy brown. Dark veins bulged along his neck and jawline, pulsing rapidly. He opened his mouth to speak, but only a wet, clicking sound came out.

"Hey, man, you alright?"

A tourist holding a metal metal detector had wandered over. He was an older guy, wearing a bucket hat and knee-high socks. He reached a hand down toward Brody.

"Don't touch him!" Kiana yelled.

It was too late. Brody lunged.

He didn't stand up. He launched himself from his hands and knees like a coiled spring, tackling the tourist into the surf. The metal detector flew through the air, landing in the dry sand with a hollow thud.

Brody pinned the man down. The tourist screamed, a high, panicked sound that cut through the noise of the crashing waves. Brody sank his teeth directly into the man's shoulder.

Blood sprayed across the white foam.

Kiana froze. Her mind went blank. The tourist thrashed, punching Brody in the ribs, but Brody didn't react. He just tore his head back, ripping a chunk of fabric and flesh away.

"Kiana!"

Lily's voice snapped her back to reality. Kiana spun around. The beach, which had been lazy and quiet just moments before, was erupting.

Further down the shoreline, three more surfers were stumbling out of the water. They moved with a jerky, uncoordinated stiffness. One of them fell face-first into the sand, immediately scrambled onto the back of a sunbathing teenager, and started biting her neck.

The screaming started. It rolled down the beach in a wave of pure panic.

Kiana didn't think. She sprinted back to the umbrella. She grabbed Lily by the wrist, yanking the game console out of her hands.

"Hey!" Lily yelled.

"We have to go. Right now," Kiana said. She didn't grab the cooler. She didn't grab the towel. She just pulled her sister toward the concrete boardwalk.

The Surf Shop Barricade

The sand dragged at Kiana's feet. Running on the beach was always a slog, but right now it felt like moving through wet concrete. Lily was stumbling beside her, crying out as the hot sand burned the tops of her feet.

All around them, the beach was dissolving into chaos. Umbrellas were knocked over. Coolers spilled ice and aluminum cans across the dunes. Kiana glanced over her shoulder. The people who had been swimming in the red tide were crawling out of the water. They didn't walk normally. Their limbs twitched. Their mouths hung open, dripping that thick, rust-colored sludge.

They were fast.

A woman in a black bikini sprinted past Kiana, screaming for help. Three seconds later, a feral lifeguard tackled her from behind, burying his face in her back.

"Keep your eyes forward, Lily!" Kiana yelled, yanking her sister's arm.

They hit the concrete stairs leading up to the boardwalk. Kiana took them two at a time, dragging Lily up. The boardwalk was a bottleneck of panicked tourists trying to flee toward the parking lots.

Straight ahead was 'Kevin's Board Room', a local surf shop built into the bottom floor of a stucco apartment building. The neon open sign was buzzing in the window.

Kiana shoved through a crowd of teenagers and slammed her hands against the glass door of the shop. She pushed inside, pulling Lily with her.

The bell above the door jingled loudly.

Inside, the air conditioning was blasting. It smelled like coconut surf wax, fresh neoprene wetsuits, and stale beer. Kevin, a guy in his late twenties with a faded band t-shirt and a messy bun, was leaning over the cash register, scrolling on his phone.

"Hey, watch the glass, Kiana," Kevin said, not looking up.

"Lock the door," Kiana gasped. Her chest heaved. She pushed Lily behind the rack of spring wetsuits.

Kevin finally looked up. He saw the sweat pouring down Kiana's face, the wild look in her eyes, and then he looked past her, out the front window.

Outside, a man in a Hawaiian shirt slammed face-first into the glass of the neighboring ice cream parlor. A feral surfer was on his back, tearing at his ear.

Kevin dropped his phone. It clattered against the wooden counter. He vaulted over the register, ran to the front door, and twisted the deadbolt. He yanked the metal blinds down, shutting out the glaring sunlight and the horrific view of the boardwalk.

The sudden dimness in the shop was stifling.

"What the hell is happening?" Kevin asked. His voice shook. He grabbed a heavy metal skateboard truck from a display case and gripped it like a weapon.

"It's the water," Kiana said, pacing the narrow aisle between racks of boardshorts. "The bloom. Brody swallowed it. He... he attacked a guy. Bit him."

"Brody?" Kevin shook his head. "Brody is out there biting people? Are you on drugs?"

Before Kiana could answer, a heavy thud rattled the front window.

Lily whimpered and curled into a ball beneath a rack of longboards. Kiana rushed to her side, putting a hand over her sister's mouth.

Thud. Thud. Thud.

The impacts were rhythmic. Kevin crept toward the front window and peeked through a slit in the metal blinds. He recoiled instantly, his back hitting a display of sunglasses, sending dozens of plastic frames clattering to the floor.

"There are four of them," Kevin whispered, his eyes wide. "They're pressing their faces against the glass. Just... smearing that red crap everywhere."

Kiana looked up at the ceiling. The shop's industrial air conditioning unit was humming loudly, vibrating the entire storefront.

"Turn off the AC," Kiana ordered.

"What? It's ninety degrees outside, we'll roast in here."

"Turn it off!" Kiana hissed. "They're attracted to the vibration. The algae acts like a hive-mind. Dinoflagellates respond to mechanical stimulation. It's how they know when to glow at night when waves crash. Right now, this building is a giant vibrating beacon."

Kevin scrambled back to the counter and slammed his hand against the thermostat. The low hum of the compressor died. The silence that followed was heavy, broken only by the sound of Lily's ragged breathing and the occasional wet slap of hands against the exterior glass.

Kiana sat on the floor, pulling her knees to her chest. She needed to think. Her backpack was still in her truck, but she had her field kit in her cargo pocket.

She pulled out the small, heavy plastic case. Inside was a portable, battery-powered field microscope and a few glass slides.

"What are you doing?" Kevin asked, watching her assemble the small device on a stack of wax boxes.

"I need to look at it," Kiana said. She took a sterile swab from the kit, walked to the front of the store, and wiped a thick smear of the rust-colored sludge off the inside lip of the doorframe where someone had bled it in.

She smeared the sample onto a glass slide, clipped it into the microscope, and flicked on the tiny LED backlight. She pressed her eye to the lens.

The magnification revealed a nightmare.

Normal dinoflagellates were single-celled, floating passively. The organisms on the slide were linked together. They had formed a complex, microscopic lattice. They were moving with unified purpose, extending tiny flagella to pull themselves across the glass. They weren't just algae. They were a parasitic macro-structure.

"It's warming oceans," Kiana murmured, adjusting the focus dial. "The heatwave. It woke something up from the deep thermal vents. It's invading the host's nervous system. Taking over motor functions to spread itself."

"English, Kiana," Kevin said, pacing nervously.

"It's a parasite. It hijacks the brain. That's why they're biting people. They're trying to spread the algae into new bloodstreams."

Kiana leaned back, rubbing her temples. Her mind raced back to her thesis research. She had spent the last two years studying deep-water kelp ecosystems. There was a specific enzyme in giant bladder kelp, Macrocystis pyrifera, that naturally broke down harmful algal blooms. It acted like a biological bleach against toxic red tides.

"My boat," Kiana said suddenly. She looked at Kevin. "My research skiff is tied up at the marina. At the end of the pier. I have fifty pounds of harvested deep-water kelp in the livewell. If I can extract the enzyme, I can neutralize this stuff."

Kevin stared at her. "The marina is a mile away. The boardwalk is crawling with those things. We're not leaving this shop."

"If we stay here, they'll eventually break the glass," Kiana said. She pointed to the window. The frame was groaning under the weight of the bodies pressing against it. The metal blinds were starting to bow inward. "We have to move."

Urethane Wheels And Marina Sludge

Kevin wiped the sweat from his forehead. The shop was already heating up without the AC. He looked at the bowing window, then at Lily, who was clutching Kiana's shirt with white knuckles.

"Fine," Kevin said, his voice tight. "But we can't run in the sand. They're too fast."

"We take the alley behind the shop," Kiana said, thinking rapidly. "It connects straight to the marina access road. It's paved the whole way."

Kevin walked over to the premium board display. He pulled down three longboards. These weren't cheap plastic cruisers; they had heavy bamboo decks, wide trucks, and massive, soft urethane wheels built for speed and silence on rough asphalt.

"Do you know how to push?" Kevin asked Lily.

Lily nodded, wiping her nose with the back of her hand. "I skate to school."

"Good. Kiana, you take the pintail. I'll take the drop-through." Kevin grabbed a heavy fiberglass fin from the repair bench and shoved it into his back pocket. "Let's go out the loading dock."

They moved to the back of the shop. Kevin unlocked the heavy steel security door and pushed it open an inch. The glare of the sun pierced the dim room. The alley was empty. It smelled heavily of dumpsters and baking asphalt.

"Stay low. Push hard. Don't stop for anything," Kevin whispered.

He threw the door open. They dropped their boards onto the blacktop. The thud of the wooden decks hitting the ground sounded deafening.

Kiana stepped onto her board, keeping her front foot over the trucks, and pushed off with her back leg. The heavy urethane wheels rolled smoothly over the cracked pavement. Lily was right behind her, her small frame crouched low for balance. Kevin took up the rear.

The heat in the alley was suffocating. The air was entirely still. As they picked up speed, the wind hit Kiana's face, offering a brief, dry relief.

They flew past the backs of restaurants, tourist traps, and dive bars. Kiana could hear the chaos from the main boardwalk parallel to them—screams, shattering glass, the crunch of car fenders. But the alley remained clear.

Up ahead, the alley spilled out onto the marina access road. Kiana carved hard to the left, leaning her weight into her heels to make the tight turn.

She hit the main road and immediately slammed her foot down to brake.

"Stop!" Kiana hissed.

Lily dragged her shoe on the pavement, skidding to a halt. Kevin grabbed Lily's shoulder to steady her.

The marina access road was a gentle downhill slope leading directly to the docks, but the road was not empty.

About fifty yards down, blocking the path, was a group of infected. There were six of them. Three wore wetsuits pulled halfway down to their waists. They were standing perfectly still, facing the ocean, twitching violently. The rust-colored algae dripped from their noses and mouths, pooling on the hot asphalt.

"We can't skate through that," Kevin whispered. "They'll hear the wheels."

"We have to go around," Kiana said. She pointed to the right, toward the chain-link fence of the boat storage yard. "Through the dry docks. We can cut across to the water."

They picked up their skateboards and crept toward the fence. A section had been peeled back by a forklift accident months ago. Kiana squeezed through, tearing the pocket of her shorts on a jagged piece of wire.

The dry dock was a maze of massive fiberglass hulls resting on wooden chocks. It smelled of bottom paint and diesel fuel. They moved quietly, slipping between the shadows of the towering yachts.

Suddenly, a metallic clatter echoed to their left.

Kiana froze. She pressed her back against the cool hull of a catamaran. Kevin pulled Lily behind a stack of wooden pallets.

An infected mechanic stumbled around the bow of a speedboat. He held a heavy steel wrench in one hand. His eyes were completely brown, bleeding thick tears of sludge. He stopped, tilting his head. He was listening.

Kiana held her breath. Her chest ached. A drop of sweat rolled down her nose and hung suspended from the tip.

The mechanic took a step toward them. He dragged the wrench along the side of the boat, leaving a deep scratch in the gel coat.

Kevin silently pulled the fiberglass fin from his back pocket. He locked eyes with Kiana and nodded toward the water. He was going to distract it.

Before Kevin could move, a seagull landed heavily on an aluminum trash can twenty feet away. The metallic boom echoed through the yard.

The infected mechanic snapped his head toward the sound. He shrieked—a wet, guttural noise—and charged the trash can, swinging the heavy wrench wildly.

"Go," Kiana mouthed.

They abandoned the skateboards. They sprinted the last hundred yards through the dry dock, bursting out onto the wooden planks of the marina.

The water in the marina was a nightmare. It was thick, almost gelatinous, completely saturated with the red tide. Thousands of dead baitfish floated on the surface, their silver bellies rotting in the sun.

Kiana's research skiff, the Coriolis, was moored at the very end of slip D, three hundred yards away.

The problem was the docks themselves. Dozens of infected were wandering aimlessly along the wooden fingers of the marina. If they ran down the main dock, they would be swarmed in seconds.

"Look," Kevin whispered, pointing down at the water near their feet.

Tied to a cleat were three foam longboards, rental boards left behind by a surf school.

"We paddle," Kiana said.

"In that water?" Kevin looked sick.

"It only infects you if you ingest it or get it in an open wound. Keep your mouth shut and don't splash."

Kiana untied the ropes. She lowered the first foam board into the thick, rusty water. It landed with a dull smack. She helped Lily onto the nose of the board, telling her to lie perfectly flat and hold on to the rails.

Kiana slid onto the back of the same board. The water felt warm and entirely wrong. It didn't yield like normal saltwater. It resisted her hands, thick like motor oil.

Kevin lowered his board and got on, grimacing as the sludge coated his forearms.

"Absolutely silent," Kiana whispered. "No splashing."

She reached her arms forward, cupping her hands, and pulled the water back. The board glided forward. The silence of the marina was oppressive. The only sounds were the gentle clinking of halyards against sailboat masts and the wet, rhythmic breathing of the infected on the wooden docks above them.

They paddled out into the main channel.

Kiana looked down into the water. It was opaque. She couldn't see an inch below the surface.

Suddenly, the water beside her board swirled. A bubble the size of a dinner plate broke the surface, releasing a puff of sulfurous gas.

Something bumped the underside of her board.

Kiana froze. She pressed a finger to her lips, staring at Kevin. Kevin stopped paddling.

A shape drifted to the surface just three feet away. It was a man wearing a torn wetsuit. He was floating face up. His eyes were wide open, coated in brown slime. He wasn't dead. His jaw twitched, snapping at the air.

The infected were in the water.

The current slowly pushed the floating man toward Kiana's board. She didn't dare move her arms to paddle. She just watched as his hand, pale and pruned, bumped against the foam rail of her surfboard.

He didn't react. He was completely passive, suspended in the thick algae, waiting for a mechanical stimulus to wake him up.

Kiana waited until the current pushed him past. She let out a long, silent breath.

She dug her hands back into the water, pulling with long, smooth strokes. The white hull of the Coriolis was only fifty yards away. They just had to make it to the swim step.

Exhaust Manifold Antidote

Kiana grabbed the metal railing of the swim step and pulled her board flush against the stern of the Coriolis. She hoisted Lily up over the transom, then scrambled over herself. Her hands were coated in the rusty slime. She grabbed a towel from the center console and wiped them frantically.

Kevin hauled himself aboard, breathing heavily. He collapsed onto the deck, staring at the sky.

"We made it," Kevin gasped.

"Not yet," Kiana said. She rushed to the stern. The livewell was a large fiberglass tank built into the deck. She unlatched the heavy lid and threw it back.

The water inside the tank was crystal clear, chilled by an internal pump. Floating in the center was a massive tangle of giant bladder kelp, its thick golden-brown fronds healthy and clean.

"Okay, I need to extract the enzyme," Kiana said, pacing around the small deck. She grabbed a plastic bucket, a dive knife, and a heavy iron wrench from the toolbox.

"How long does that take?" Kevin asked, sitting up.

"In a lab? Three hours with a centrifuge. Here? About five minutes if I crush it and boil it down."

Kiana pulled a massive handful of kelp from the tank. She threw it into the plastic bucket and started hacking at it with the dive knife, chopping the thick, rubbery stalks into small pieces. The smell of fresh, clean iodine filled the air, cutting through the stench of the red tide.

"I need heat," Kiana said. She looked at the boat's outboard motor. It was a massive 250-horsepower engine.

"Kevin, start the engine. Let it idle. I'm going to take the cowling off and put this bucket directly against the exhaust manifold. It gets up to three hundred degrees. It'll boil the water out of the kelp and concentrate the enzyme."

Kevin jumped up and turned the key in the ignition. The outboard roared to life, a deep, throaty rumble that shook the deck.

The noise was deafening in the quiet marina.

Instantly, the infected on the docks turned their heads. The vibration in the water acted like a dinner bell.

"Kiana!" Kevin yelled over the engine noise. He pointed at the water.

Dozens of bodies were slipping off the docks, splashing heavily into the thick red water. They didn't swim properly. They thrashed, their limbs churning the sludge as they moved relentlessly toward the sound of the boat motor.

"Keep it running!" Kiana shouted. She ripped the plastic cover off the engine. The metal beneath was already radiating intense heat. She wedged the plastic bucket against the scorching exhaust pipe.

The plastic began to warp and melt almost instantly, but the kelp inside started to sizzle. Steam rose from the bucket, smelling sharply of salt and concentrated minerals.

"They're getting closer!" Kevin grabbed a long aluminum boat hook, standing at the stern.

The first infected reached the boat. A woman with algae-stained teeth grabbed the swim step. Kevin jammed the blunt end of the boat hook into her chest, pushing her back into the water. Two more took her place, their hands slapping against the fiberglass hull.

Kiana ignored them. She stared at the bucket. The kelp was breaking down into a thick, golden-green paste. It was working. The heat was destroying the cellular walls of the kelp, releasing the enzyme.

"I need to aerosolize it!" Kiana yelled. She looked around the boat. Her eyes landed on the bilge pump hose.

She grabbed the hose, ripped it off the pump, and shoved one end directly into the boiling bucket of kelp paste.

"Kevin!" Kiana screamed. "Help me route this into the engine's air intake!"

Kevin abandoned the boat hook. He rushed over, grabbing the hose. Together, they forced the rubber tube into the main air intake valve of the outboard motor.

"If we run this through the combustion chamber, the exhaust will spray the vaporized enzyme straight out the back!" Kiana explained, coughing as the steam hit her face.

"Will it work?"

"It has to! Rev the engine!"

Kevin jumped to the helm. He grabbed the throttle and slammed it forward.

The engine screamed. It sucked the boiling kelp mixture straight into its cylinders. For a terrifying second, the motor sputtered and choked, black smoke pouring from the exhaust.

Then, it cleared.

The exhaust didn't blow black smoke. It blew a massive, thick cloud of pale green vapor. The boat's propeller churned the water, throwing the vaporized enzyme into the air and deep into the red tide surrounding the hull.

The green cloud settled over the thrashing infected in the water.

It was instantaneous.

The moment the vapor hit their faces, the infected stopped moving. Their eyes rolled back. The man clinging to the side of the boat violently convulsed, retching over the side. He vomited a massive stream of the dark rust sludge into the water.

He gasped, taking a massive, ragged breath of clean air. The brown tint in his eyes vanished, replaced by stark white.

"Oh my god," the man choked out, shivering violently. "What... what happened?"

It was working. The enzyme was destroying the parasitic structure, severing its hold on the host's nervous system.

"Kevin, put it in gear!" Kiana yelled, tears of relief stinging her eyes. "Drive us along the shoreline! We have to spray the whole beach!"

Kevin slammed the boat into gear. The Coriolis surged forward, tearing through the thick water. Kiana stood at the stern, feeding the rest of the kelp into the bucket, fueling the green cloud that billowed out behind them.

They raced parallel to the beach. The vapor cloud rolled over the sand, blanketing the boardwalk, the dunes, and the screaming crowds.

Wherever the cloud touched, the infected collapsed. They vomited the rust water into the sand, coughing and gasping for air. The terrifying, hive-mind coordination broke. They were just people again, terrified and sick, but human.

Kiana looked out over the water. The thick, dark red sludge was dissolving. Where the green vapor settled on the surface, the ocean turned blue again. The heavy, suffocating smell of copper and rot was replaced by the crisp, clean scent of salt and ozone.

A sudden rush of oxygen filled Kiana's lungs. The physical weight of the air lifted. The claustrophobia of the last hour shattered, leaving behind a profound, exhausted clarity.

She slumped against the gunwale, sliding down until she was sitting on the fiberglass deck. Lily crawled over and wrapped her arms around Kiana's neck. Kiana buried her face in her sister's hair, listening to the steady, rhythmic hum of the engine as they carved a path of clean water through the dying tide.