The Floor Sweeper Incident

Ten minutes of cold water from the utility tap was usually enough to rinse turbine silt from a pump bearing, not drown an electric floor scrubber.

Suometar Tuominen squeezed a pint of freezing Baltic sludge from her left wool sock into the floor drain. Her teeth rattled against her molars. Behind her, basin three lapped against its concrete rim, coated in greasy yellow foam from Cutter Kuha's distant scour charges. She wanted two dry socks, twenty minutes without an alarm, and a clear deck before the briny silt dried into a corrosive crust over her sensor conduits.

Across the workshop slab, Kaarle-alt was not resting where she had left him.

He crouched on all fours near the tool rack. The linen strips around his torn shoulder were gray with bilge, yet his balance had returned. His pale flanks rose and fell without the frantic rattle of the intake rotors. Webbed toes gripped the diamond-plate steel, leaving wet, triangular smears in the grit. He did not blink. His obsidian-flecked eyes were fixed on the far wall, where the station's yellow maintenance scrubber sat docked on its trickle charger.

"Leave that alone," Suometar told him, peeling off her soaked overshirt. "It cost four hundred euros and three requisition forms."

The creature did not acknowledge her voice. His dorsal crest—a translucent ridge of stiff cartilage running from his nape down between his shoulder blades—flared two inches high. A faint ripple shook his throat. Through the thin film of water coating the concrete between them, the skin on Suometar's shins prickled with a sympathetic vibration: thirty-eight hertz, dry and territorial.

She ignored the tickle in her nerves, kicked the scrubber's foot switch, and turned toward her telemetry console.

The machine woke with a high-pitched solenoid click. Its two nylon brushes began to spin, churning up a lather of detergent and brackish water as it rolled forward on two rubber drive wheels. It made a steady, grinding drone, bouncing off the steel lockers with the blind confidence of cheap programming.

Kaarle-alt flattened instantly against the floor plates.

His belly touched the cold concrete. His elbows tucked into his ribs, claws scraping parallel grooves into the paint. He did not flee back toward the basin. Instead, his pupils dilated until the amber rings vanished into black. He tracked the yellow plastic shell with a predator's rigid focus, tilting his head at each wet squeal of the rubber treads.

Suometar paused with her dry rag halfway to the console screen. "It eats mud, not fish. Go back in the tank."

The scrubber pivoted ninety degrees, corrected its heading, and chugged directly toward his left flank.

Kaarle-alt struck.

He did not lunge with his wounded shoulder. He shifted his weight to his right hip, threw his torso forward in a low, sliding arc, and slammed both webbed palms down onto the scrubber's plastic dome. The impact rang like a dropped anvil. The little machine shuddered, its drive wheels whining in shrill protest as they spun against the slick diamond plate, spraying soapy foam across his thighs.

The creature snarled. The sound was not a wolf's growl or a dog's bark; it was the wet, concussive rasp of an intake valve choking on gravel.

He dug his black talons into the casing, gouging through the warning stickers and the battery latch. The machine, programmed to reverse when obstructed, lurched backward with a mechanical beep.

Kaarle-alt recoiled as if stung, then bared two rows of translucent, needle-sharp teeth. The beep seemed to offend him on an ancestral level. He pinned the scrubber with his forearm, hauled it off the deck, and shook it twice. Screws rattled loose inside the housing. The brushes whipped uselessly through the empty air, flinging gray detergent into his face.

He blinked through the soap, his nictitating membranes snapping shut like frosted glass. Then, with terrifying efficiency, he dragged the writhing machine across the floor toward the stainless-steel utility sink.

"Wait," Suometar said, dropping her rag. "Kaarle, drop that!"

He did not drop it. He hoisted the ten-kilo unit chest-high and slammed it into the basin of the sink. With his left thumb, he shoved the brass lever of the utility faucet wide open.

A torrent of cold, untreated seawater roared from the spigot, flooding the sink basin.

Kaarle-alt shoved the scrubber beneath the churning surface with both hands. He pressed down with his full weight, leaning over the rim, muscles bunching across his broad, pale back. The linen binding on his shoulder darkened with strain, but he did not give an inch.

Under two feet of water, the scrubber's motor gave a muffled, bubbling shriek. Air bubbles boiled up through the detergent foam. The brushes churned the surface into stiff white peaks. The little machine fought for its artificial life, its drive axle shuddering against the steel basin, whining like a trapped eel.

Kaarle-alt held it down without moving a muscle. His crest remained flared, his jaw set in cold, ceremonial resolve. He watched the bubbles thin. He watched the spinning axle slow to an agonizing twitch.

When the last bubble popped and the motor died with a pathetic subterranean clunk, he held it under for thirty seconds more, ensuring the kill was permanent.

Suometar stood by the bench, one damp wool sock pulled halfway up her calf and one foot bare.

A bubble of air rose from her own chest, sharp and involuntary. She pressed the back of her wrist to her mouth, but the sound escaped anyway: a sudden, jagged bark of laughter. It bounced off the damp concrete bulkheads, echoing through the empty station.

She had spent the last hour terrified of this creature tearing her throat out, and here he was, dripping with soapy water, methodically executing a sixty-watt floor cleaner.

Kaarle-alt turned his head at her laughter. The soap scum clung to his chin and the wet curve of his neck. His amber eyes narrowed in stark bewilderment. He looked from her to the drowned carcass in the sink, then back to her, as if expecting her to offer him praise or a piece of herring for clearing the perimeter of an armored rival.

"You idiot," she murmured, wiping a wet smear from her cheek. Her chest felt strangely loose, lighter than it had been since the sirens started. "It didn't even have teeth."

Then the sink hissed.

The scrubber's submerged battery pack cracked beneath the water pressure. A brilliant blue spark snapped through the basin, accompanied by the acrid stench of scorched lithium and boiled seawater.

The electrical arc traveled straight down the copper drainpipe and leapt into the station's grounding rail.

A sharp buzz tore through the wall behind the workbench. Sparks showered from the secondary distribution panel, popping like firecrackers.

Suometar's laughter vanished. Her training took over before her pulse could jump.

She lunged across the wet floor, snatched a fiberglass disconnect rod from its brackets, and jammed the hook into the main grounding breaker. With a brutal heave, she threw the lever down. The contacts disengaged with a heavy snap, cutting the line before the ground fault could register on Foreman Oksala's shore monitors.

Silence slammed back into the pump house.

Thin gray smoke drifted from the base of the bulkhead, smelling of melted neoprene.

Suometar dropped the rod and knelt by the wall. The surge had not tripped the telemetry fuses, but the sudden heat had fried the vulcanized rubber vibration shunts that isolated the sub-level floor from the station's outer steel hull. The black rings had collapsed into charred, sticky rings of carbon.

She set her bare palm against the bare bulkhead.

The dampening barrier was gone. Metal met metal throughout the station's foundation.

Behind her, Kaarle-alt stepped down from the sink. His gills flared, drawing in the smoky air. He let out a low, settling rumble from deep within his ribcage, a sound of post-hunt satisfaction.

In open air, the sound should have faded to a dull click within three paces.

Instead, the vibration hit the uninsulated floor plates. The frequency surged straight into the station's steel skeleton. The bulkheads hummed. The overhead pipe racks sang like tuned guitar strings. Far below, through thirty feet of submerged reinforced iron, the sound rippled out into the dark water of the sound, clear, unmuted, and entirely unshielded.

Suometar looked down at her vibrating palm, then turned slowly to look at him.

He was watching her, his pale throat pulsing in rhythm with the walls.