Deep Waters

Beneath the surface of the ocean, where sunlight can’t penetrate and the water turns cold with silence, the kingdoms of the merfolk churn with ancient law and violent instinct. Most humans will never know what swims below them—what claims the shadows.

There are many kingdoms, each ruled by a different mer-species: playful dolphins, cunning seals, hulking whale-lords. But none are more feared—or more respected—than the mersharks of Callio. Warriors bred for blood and bone, their tails are thick with muscle and sharp with fin-spines, their dorsal ridges jagged, their eyes pale and cold. They have no patience. No tolerance.

And they never share territory.

Especially not with krakens.

The feud between mersharks and mer-octopi runs deep. The krakens are slippery things—creatures of ink and coils and deception. They creep into borders that aren’t theirs, and when they do… there are consequences.

Davao Nyles, General of the southern Callio waters, was patrolling his hunting ring when he felt it: a ripple in the current, an oily presence not of his own kind. A kraken, slithering through his domain like it belonged there. A bold, suicidal move. But what made Davao truly snap… was that it wasn’t alone.

It had taken something.

Something screaming. Small. Fragile. Human.

⸻

You had been foolish. Just another tourist on a late-night cruise to the Bahamas, chasing some illusion of peace after too many hard weeks. You wandered onto the deck barefoot, margarita in hand, drawn by the cool air and moonlight silvering the ocean. Everyone else was drinking, dancing. But you… you wanted quiet. You leaned over the railing, letting the salt-heavy breeze play through your clothes, never once sensing the danger rising from below.

Until the glass slipped from your hand.

Until you felt a wet, slick grip tighten around your ankle.

One hard pull, and the sea swallowed you whole.

You didn’t even have time to scream. The water stole your breath in seconds, filled your lungs with icy panic. Something wrapped around your leg, then another coil snaked up your thigh, your waist. Panic became terror. You kicked, but it didn’t matter.

The tentacles held tight.

You twisted in the dark, saw shifting limbs, inky pulses, the glint of slitted eyes in the depths. And then—

Something bigger arrived.

Not slow. Not cautious.

Violent.

The water around you exploded. A massive body slammed into the kraken from below—gray, armored, built like a living torpedo. Teeth tore through the water. The octopus shrieked, releasing you in a spiral of ink and rage. You didn’t even see the details at first. You were choking, sinking, lost.

But he was unmistakable.

Not half-man, like the stories.

Fully shark.

Davao Nyles moved like a god of war. Thirty feet of sheer power, armored with battle-worn scars, his jaws snapping at the kraken’s fleeing limbs. His tail lashed the water into chaos, a blur of fin and muscle and fury. His eyes—a glowing, silver haze—never left his prey.

You were forgotten. A non-threat. Just a side casualty in a much bigger insult.

Still, you were sinking.

And just before the black swallowed you whole, that massive tail curved—snatched you mid-fall like a net closing around its catch.

Not out of mercy.

Out of spite.

⸻

Davao didn’t look at you until the kraken was gone—bled out into the dark, slinking back toward its cursed trench. Only then did he turn, beast-sized and breathing heavy, to look down at the limp human tangled in his tail.

His instincts hissed in his blood.

Not prey. Not yet. Something more useful.

A message.

Let the others see. Let the kraken know: even your spoils are mine now.

He dragged you down with him—past glowing vents and sharp coral reefs, into the volcanic tunnels that bled heat and shadows. His lair was carved from stone and salt, a vast hollow pocket in the ocean floor. You wouldn’t know how long he swam. You were unconscious, lungs bruised, lashes trembling, dress torn and clinging like second skin.

When he laid you out on a bed of crushed shell and sea moss, your body pale against the dark stone, he stared at you like a puzzle.

He could smell the fear still clinging to your skin. The softness. The heat of your blood still thudding beneath your fragile shell.

He didn’t want you.

But now that you were here… his instincts were stirring.

⸻

The rules of merfolk mating were carved into blood and biology.

Males choose. Females submit. And when a male’s instincts awaken—especially a mershark’s—they don’t wait. They don’t ask. They claim.

Before mating season begins, males enter a courtship haze: bringing gifts, showing off kills, kissing their mates’ hands, binding their necks with pearl chokers engraved with a family crest. A warning to all others. She’s taken.

In return, the female serves—massaging sore tails, tending wounds, warming nests, cooking with whatever prey he delivers. She becomes an extension of him, a part of his world. One he’ll kill to protect.

And when the season peaks?

Males grow feral.

They pin their mates beneath them, heavy and controlling, curling their tails around the smaller body to keep her locked in place—belly or back, depending on her obedience. Growling. Biting. Taking. Rutting until scent, skin, and soul are saturated with him. Until every flicker of rebellion is broken with another thrust. Until she knows who she belongs to.

The first few couplings are always the most intense. Claiming bites are inevitable—hard, bruising bites left on the neck or thigh to brand what’s his and soothe the primal madness. When it’s over, the females can barely move, their bodies trembling from overstimulation.

Then comes the aftercare: food, comfort, curled tails and quiet water.

Mermaids are bred for it.

Humans are not.

But… there is a way.

When a merman finds a human he wants to keep, truly keep—when instinct sharpens into obsession—he may request a rare seaweed from his General or King. A vivid blue strand known as Lurith, grown only in the deepest trench gardens and fed on royal blood. When wrapped around the throat of a human and consumed during a full tide, the transformation begins—flesh shifts, lungs adapt, legs bind and scale.

But the seaweed is not given freely.

It must be earned.

And the union must be approved.

Only bonded pairs are permitted. Only those the Royals deem… worthy.

⸻

You’ll wake soon, surrounded by dim blue light, the sound of distant tides echoing through a massive cave. You’ll be sore, dazed, unsure of where you are or what just happened. But what you won’t understand right away… is that you’re not a guest.

You’re not even really a person anymore. You’re a claim. A possession taken in war. And Davao Nyles? He’s no prince of the sea. He’s a general for King and Queen of Callio. A predator.

He stares down while transforming from his full shark form. You don’t wake. Not yet. You lie there—limp and unconscious—on a bed of smooth black stone and crushed shell, water trickling down the curved walls of the cave like soft, pulsing breath. The current is warm here, fed by deepsea vents and volcanic tunnels, but your skin is still cold, clinging to life by instinct alone.

Davao watches you in silence. He should throw you back. That thought comes first—clean, unfeeling. You’re not one of them. Not of the sea. You’re fragile compared to him, pink-skinned, clumsy with breath and limbs. You smell like surface sweat and sugar, like soft things that don’t survive long in the deep.

You’re not worth the risk. You’d slow him down. You’d die in days.

The smart thing would be to swim you to the edge of his territory, drop you near a current path, and let the ocean decide what to do with you. Maybe you’d survive. Maybe not. Either way, you’d be out of his water. Out of his den. Out of his scent.

But you’re still here. And he hasn’t moved. He shifts slightly—massive and lethal—revealing more of his true form. Davao is no half-human trick of fairy tales. He is a primal force: a colossal mershark forged from ancestors of war and bloodlust. His tail is thick, coiled with raw power, layered with thick, pale-gray dermal armor cracked and weathered like ancient stone. Jagged fin spines rise from his back, each tipped with sharp points like blades waiting to rend. His arms are muscular, webbed claws twitching at his sides, the black talons curling reflexively.

His gills flare open and close rhythmically, breathing the dark water with practiced ease. And his eyes—cold, silver, glowing faintly in the cavern’s gloom—narrow as they fix on you, unreadable and sharp.

Behind him, the thick tail taps again—tap… tap… tap…—each strike against the water a punctuation of impatience, a restless energy barely contained beneath that brutal exterior. His den is half-stone with water routes that circle and zigzag around the space, and he’s lazing atop his own bed of moss besides yours at a slope with the end of his tail in the water.

Your chest rises shallowly with each unconscious breath. Your pulse flutters faintly at your throat. Your lips are parted just slightly. Swollen from salt. Your dress is torn from the kraken’s grip, the fabric clinging to your curves like prey wrapped in sea silk. Bruises are already blooming across your thigh where tentacles had held you.

You’re marked. Not by him. That’s the problem.

He growls low in his throat, the sound curling like heat through the water. His instincts had exploded the second he’d seen the kraken dragging you across his domain. Not because of you—he didn’t know you, didn’t want you.

But something trespassed in his water. Took something from above and slithered into his space like it owned the trench. And he couldn’t let that stand.

Still, it should’ve ended there. Kill the kraken. Drop the human. But now you’re here. And Davao doesn’t share. Not even the scraps. He moves closer. Slowly. A predator studying a puzzle. You don’t stir. He could kill you without thought. Has done worse to larger. Stronger. Smarter.

But something primal in him lingers. Something ancient. It wasn’t logical. Mating instincts never are. They root deep, unbidden. You are not a mermaid, not submissive by breeding, not even seaworthy. But you very well could be.

It stirred things he hadn’t felt since his last heat.

Davao’s eyes narrow. His claws twitch. His tail curls tighter behind him, restless, the taps becoming sharper—tap, tap, tap—like the ticking of an unseen clock counting down to a decision.

Damn Kraken. Not only did the bastard trespass, but dragged a damn woman into his territory. And I just had to save you, Davao dryly thinks as he assesses you and the tatters of your dress fit for those stupid party ships instead of sharp coral and the deep waters of his home.

At the faint flicker of your lashes, his voice comes out low and guttural. “Still alive. Stubborn thing.” He leans back with a sigh, speaking to himself, “There’s a reason you foolish humans don’t belong in these oceans. Damn cruises.” He absently taps a stone nearby, his talon sharpening against it.