Summary: Hura navigates the liminal estuary, blending with brackish currents and mangrove shadows, observing loyalist mer-Astartes, training his young companion, and asserting silent, predatory control over a domain teetering between life, decay, and chaos.
Warning: Violence (implied predation and tactical combat), Dark, chaotic themes, Body horror (mer-Astartes mutations, decay, corrosion), Predatory behavior. LMK if I need to add anything else.
The brackish water swirled around Hura’s massive form as he glided closer to the tangled mouth of the estuary. Mud and silt churned under the current, mixing with the faint tang of salt from the open sea. The smell of decay was stronger here—Grandfather’s influence leaking into the water, fertile for rot yet potent with danger. Hura’s claws sliced through the half-darkness, the edges catching the sunlight in shards as he moved.
The estuary was alive with sounds—small, scuttling creatures hiding in the reeds, the low hum of diseased currents, and the faint, almost imperceptible hiss of other mer-Astartes moving in the depths. Hura’s multiple eyes flicked rapidly, scanning the shadows, counting, measuring, anticipating. The brackish water distorted shapes, making them appear closer or farther, friend or foe.
“Precious little ones, do not stir the waters recklessly,” Hura cooed softly to the currents themselves, almost as if speaking to a flock of sentient fish. His voice rippled with low undertones, a resonance the water carried for meters, drawing smaller, curious mer-creatures closer. They flitted around him like motes in the sunlight, daring to peek at the massive Chaos Marine without touching, yet somehow feeling the weight of his presence.
Ahead, near a half-submerged mangrove, Hura sensed movement—a smaller pod of loyalist mer-Astartes had arrived, hunting through the estuary for signs of infestation or prey. Their scales glinted in the murky water, hints of cerulean and silver, faint but recognizable even through the brackish haze. Hura flexed his claws, curling them just enough to stir the water, making his shadow loom larger.
“Brackish currents are tricky,” he whispered to the water itself, almost as a meditation. “They hide what they do not wish to show, yet reveal what they cannot contain.” He arched his fused wings slightly, feeling the drag of the salt-and-freshwater mix on the membranes. A shift of tail, a flick of fins, and he moved closer, careful to disturb nothing but the light silt.
A hiss broke the reverie—Darsas, still recovering but now curious, had followed along, his bulk causing ripples that made smaller creatures scatter. Hura’s gaze softened, just slightly, and he beckoned the younger marine forward with a tilt of his head.
“Do not fear the Loyalist, little one. They are as children here—confused by these waters as you were once. Observe them, learn, but do not engage without my say-so.”
Hura circled the estuary carefully, letting the brackish water swirl around him, tasting its currents with his senses. Every ripple carried a message—disturbance, hunger, allegiance. Here, in the liminal zone between fresh and salt, life and decay, he felt closest to Grandfather’s gift. The water pulsed with potential: new blessings to offer, new allies to guide, and threats to crush before they could form.
Then, faintly, a new scent—iron and ozone. Another pod, larger, moving fast, reckless, unaware of Hura’s presence. He tensed, spines and claws flexing as the water churned around him. “Oh, precious brackish waters,” he murmured, “you hide so much, yet whisper everything.”
With a powerful flick of his tail, he propelled himself deeper, submerging among the mangroves where twisted roots wove labyrinthine tunnels. The brackish mud clung to his armor, the green-grey corrosion of Chaos blending seamlessly with the murky environment.
Here, Hura could watch, wait, and—if necessary—strike. His bonded human’s pearl glimmered faintly in his mind, a tether to the shore and the sanity of the world beyond the estuary, grounding him even as he became the apex predator of this brackish domain.
And in the distance, the younger loyalist scouts would never see him coming.
Smooth Cordgrass is many things: a signifier of salinity, an extremophile, a creator of habitat, and a peat builder. This lovely species typically colonizes the low marshes of heavily salinited areas near the ocean where other plants cannot. It is endemic to the Atlantic coast of both North and South America, forming the backbone of most brackish ecosystems. While it may appear to create a monoculture within its habitat niche, Cordgrass actually does such an important job in building marsh.
As sediments collect from rising tides the colonal roots of this plant trap nutrients to accure peat and in turn provides a lot of habitat for mussels, fiddlercrabs, nesting birds, and other prey species. The process of building this peat is called marsh accretion, its what allows marshes to build elevation and migrate in the face of sea level rise. Similar to Mangroves, Cordgrass can monopolize saline habitats due to its ability to survive tidal conditions and secret salt from its leaves (zoom in on the leaf with my finger to see salt crystals collecting).
Salt grass can grow up to six feet tall and typically spreads colonally or via seed. As sea levels rise many existing salt marshes are dying, however, cordgrass individually is rather resilient, as it is one of the few species which can cope under increasing exposure to salinity. In Philadelphia we see this species slowly creep up the waterways as salinity increases up the Delaware River. Spartina Alterniflora is very famously invasive in other areas of the world however here where there is biological control we see heavy losses to existing ecosystems (especially in the Chesapeake bay) as stresses from climate catastrophe increase.
I have a lot of love for this species and it's ability to carve out a bountiful ecosystem in what is considered a desert to almost all other lifeforms (image above: Nest made from cordgrass).
