"You're late," he says.
His voice is a vibration in the water, a low rumble that seems to come from the stone itself. It is a sound made for the crushing dark, for closeness.
"I had to wait for Elder Soryn to finish his lecture," I say, coming to a halt beside him, my movements losing their ceremonial stiffness as the deep water claims me.
I don't reach out. That is part of the rule we built in the dark, an agonizing boundary between our worlds. Touch in the city is cheap. A brush of fins. A polite hand on an elbow. A display of rank. Down here, in the pressure, touch is currency. We do not spend it until it means something.
Kael turns his head. A slow movement. His black eyes absorb the faint light as they sweep over me, taking in the crushed pearl dust still clinging to my shoulders, the ceremonial paint that feels like a layer of lies. His gaze lingers on the polished sheen of my fins, the elaborate braids in my hair, the jewelry around my neck, the tension locked in my jaw.
"You look loud," he says. The observation is blunt, an insult and a compliment all at once.
A breath escapes me, half laugh, half pure exhaustion. "It's a feast. The whole city is loud. I've been shouting for hours without making a sound."
His attention drops to the pearlescent shimmer on my collarbones. He frowns. "Why wear it? It catches the light. It makes you a target."
I have to bite the inside of my cheek to kill a real smile. "It's not for hiding, Kael. It's for being seen. Some of us aren't obsessed with disappearing."
"Invisibility keeps you alive," he counters, though there is no real sting in his words.
He pushes off the stone. The powerful snap of his tail sends a wave of displaced water washing against my chest, another phantom touch that makes my gills flutter. "Come. The deep current is shifting north. The vents are active."
"The vents?" I hesitate, the warning he gave me weeks ago surfacing in my mind. "You told me they were too hot this time of year. The water scalds."
"Not for hunting," he says, angling his body downward, aiming straight for the true dark where the light is a forgotten memory. "For seeing."
He pauses, glancing back over his scarred shoulder, his dark eyes finding mine in the gloom. He is waiting.
It is the same choice he offered me that first night in the collapsing reef, the one that has become easier every single time. The light, or the dark. The cage, or the abyss.
"Lead the way," I say.
He dives.
The descent is a betrayal of everything the Vaels taught me. Kael is a wedge of iron-dark cartilage cutting a path through the crushing weight, and I am a shadow in his wake. The light dies not in a gentle fade, but with the violence of a throat being slit. The last stubborn photons are ripped away, and we are plunged into a darkness so absolute it has texture. It is a cold, heavy velvet pressing against my eyes.
My muscles scream. My gills burn as the pressure mounts, a physical force trying to flatten my ribs. I remember the lessons, the warnings about the deep's crushing indifference. But I do not thrash. I do not panic. I focus on the rhythmic, powerful displacement of Kael's tail ahead of me, a metronome for survival.
Kael moves with a brutal efficiency that makes my own graceful strokes feel like a child's clumsy fluttering. He commands the water. A single, lazy flick of his tail propels him twenty lengths. He cuts through the abyss as if he owns it, while I still have to ask it for permission.
After a long stretch of silence, the darkness begins to change.
The physical quality of the black shifts. The water grows rapidly warmer. It is a sharp, biting, chemical heat smelling of brimstone and creation. It's the scent of the earth's core bleeding into the sea.
"Look down," Kael orders softly, the vibration a caress against my skin.
I look.
My breath catches hard in my throat.
Far below us, the ocean floor has cracked wide open. The trench bleeds color. Hundreds of hydrothermal vents rise from the dark rock like gothic cathedral spires, belching clouds of superheated mineral water into the freezing ocean. The water churns around them, a violent, boiling chaos.
Clinging to them, feeding entirely on the heat and the toxic poison, are colonies of impossible life. Giant tube worms tipped with brilliant, neon-red plumes sway violently in the turbulent waters. Vast mats of bacteria glow with a ghostly, electric violet light, painting the abyss in strokes of living light. Crabs purely white, like bleached bone, scuttle over jagged rocks shimmering with veins of fool's gold, their movements clumsy yet swift.
It's an alien city. It's chaotic, violent, and impossibly, breathtakingly beautiful. A symphony of destruction and creation, playing out in the crushing dark where no one is meant to see.
"By the tides," I whisper. The sound is instantly swallowed by the deep, thrumming roar of the vents.
I swim closer, mesmerized, letting the heavy heat wash over my chilled skin. The light here is strange. The violet luminescence makes my red scales look deep and rich. It casts Kael's paler skin in sharp relief, highlighting the brutal, white scars mapping his history across his broad back and arms. Each scar tells a story of a fight, a survival, a life so far removed from my own it feels like it belongs to another species entirely.