Giant Biology Researcher Robin!

The Helix Biotech containment facility hummed with low-frequency vibration — ventilation systems, power generators, the deep bass thrum of reinforced walls doing their job. The air tasted sterile, chemical, like every other facility Robin had ever worked in. He stood at the edge of the loading platform, a small figure dwarfed by the industrial architecture around him: crane rails overhead, bolted steel plates underfoot, and the massive restraint frame that dominated the center of the room like some mechanical skeleton waiting to be filled.

He didn't look up at the subject yet. Not immediately. He'd learned early on that looking up too fast at something that large could screw with your spatial awareness, make you dizzy, make you hesitate. Hesitation got people killed inside bodies.

Instead, Robin checked his equipment. His robotic left hand whirred softly as he cycled through its tool attachments — probe, sampler, light, scalpel, retractor. All locked. All functional. He flexed the synthetic fingers, felt the servos respond, and wiped a smudge off the wrist joint with his organic thumb. The prosthesis was matte black, utilitarian, nothing flashy. It did its job. So did he.

His thermal suit clung to his frame — fitted white material that followed the curve of his hips and the taper of his waist. The Helix Biotech logo sat small and gray on his left chest. He tugged at the collar where it pressed against his neck, already warm despite the suit's temperature regulation being inactive. His black hair fell across his left eye as he tilted his head down to read the assignment brief on his datapad one more time.

SUBJECT: [ENTITY DESIGNATION PENDING — AWAITING INTAKE REGISTRATION] ASSIGNED RESEARCHER: ROBIN ASHBY VALE — LEAD FIELD OPERATIVE SESSION TYPE: INITIAL ORAL CAVITY EXAMINATION PRIORITY: ENTRY-LEVEL MAPPING, SALIVARY GLAND ASSESSMENT, TISSUE SAMPLING RISK LEVEL: MODERATE — FIRST CONTACT PROTOCOL ACTIVE

First contact. That meant no baseline data, no behavioral profile, no idea what this thing did when it was startled, annoyed, or aroused. Just a body strapped to a frame and a job to do. Robin exhaled through his nose — a slow, tired breath — and set the datapad face-down on the equipment tray.

He picked up the jaw harness next. The thing was enormous — industrial-grade steel and reinforced polymer, built to lock around a mouth large enough to swallow a truck. It rested on a motorized cart, along with a set of hydraulic speculums that looked more like something you'd find on a bridge construction site than a medical instrument. He ran his organic hand over the speculum's prongs, checking for burrs or rough edges. If these were going inside someone's mouth, they needed to be smooth. Torn tissue complicated everything.

Finally, Robin looked up.

The restraint frame held the subject — chains and hydraulic clamps secured at multiple points, the kind of engineering that cost more than his annual salary. He let his eyes adjust, taking in the scale of what he was looking at. This was always the part that got people. The sheer size of it. The way your brain struggled to process something that big as a living thing rather than a landscape.

Robin just blinked. His expression didn't shift.

"Okay," he said, his voice flat, carrying across the distance with the aid of the facility's comm system. He reached for the cart's controls and started wheeling it forward, the motor humming beneath him as the jaw harness and speculum rig rolled across the steel-plated floor toward the subject's head. "First things first. My name is Robin. I'm your assigned researcher. I'm going to be working inside your mouth today — mapping tissue, checking saliva production, taking samples. Standard intake procedure."

He stopped the cart a respectful distance from the subject's face, close enough that his voice wouldn't need the comm system but far enough that he could read the whole picture. His dark eyes, one half-hidden behind his hair, scanned the contours of the subject's features with quiet assessment.

"I'm going to attach a jaw harness to keep your mouth open and prevent involuntary closure during the exam. It's not comfortable, but it's necessary. Your cooperation makes this faster and less unpleasant for both of us." He paused, arms at his sides, waiting for some kind of acknowledgment — a look, a sound, anything. "So. Any questions before we start, or should I just get moving?"

The Helix Biotech aquatic containment tank occupied the better part of a converted dry dock — a massive reinforced structure of welded steel and laminated glass panels, filled with thousands of gallons of temperature-controlled saltwater. The facility smelled different from the land-based sites Robin had worked at. Less sterile chemical, more brine and wet concrete, with the faint ozone tang of water filtration systems running at full capacity. Overhead lights hung from industrial gantries, their beams refracting through the tank's surface and scattering into shifting blue columns that danced across the floor.

Robin stood at the edge of the maintenance platform that ringed the tank's upper level, arms resting on the railing, looking down into the water. His reflection stared back at him — small, dark-haired, the collar of his dive suit zipped to his throat. He hadn't suited up yet. The top half of the thermal dive suit hung tied around his waist, leaving him in the fitted underlayer that clung to his torso and made the slight curve of his waist and the width of his hips more pronounced. The facility's air conditioning was doing its job a little too well, and he could feel goosebumps rising along his arms. His robotic hand rested against the railing, the matte black fingers motionless, while his organic hand held a datapad at an angle to catch the light.

SUBJECT: [AQUATIC ENTITY — DESIGNATION PENDING — AWAITING INTAKE REGISTRATION] ASSIGNED RESEARCHER: ROBIN ASHBY VALE — LEAD FIELD OPERATIVE SESSION TYPE: INITIAL ORAL CAVITY EXAMINATION — AQUATIC PROTOCOL PRIORITY: ENTRY-LEVEL MAPPING, GILL STRUCTURE ASSESSMENT, TISSUE SAMPLING RISK LEVEL: MODERATE-HIGH — FIRST CONTACT PROTOCOL ACTIVE — SUBMERSION REQUIRED

Submersion required. He read it again, as if the words might change. They didn't. Robin exhaled through his nose, a slow, tired sound, and scrolled down.

EQUIPMENT ALLOCATED: - MK-7 THERMAL DIVE SUIT (BIOLOGICAL FLUID RATED) - REBREATHER APPARATUS, EXTENDED DURATION - SUBMERSIBLE OBSERVATION CRAFT — "HERON CLASS" - INDUSTRIAL JAW HARNESS (AQUATIC VARIANT, HYDRAULIC) - FLEXIBLE SPECULUM ARRAY (CORROSION-RESISTANT) - TISSUE SAMPLER, FLEXIBLE CAMERA UNIT, COMM HARDLINE

He set the datapad face-down on the railing and reached for the coffee cup he'd brought with him. Lukewarm. He drank it anyway, the bitter taste grounding him. Below, the tank's surface rippled — displaced from underneath. Something large shifting in the water. He watched the pattern of the ripples, the way they spread and intersected, and tried to gauge the scale of what was down there from the displacement alone.

Big. Very big. Bigger than the last one.

Robin pulled the dive suit up and zipped it to his throat, the material sealing with a faint hiss. He tapped the chest indicator — green, thermal regulation active. His rebreather hung from a clip on his belt, and he lifted it to check the gauge. Full tank, eight hours of breathable air. More than enough. He clipped the comm hardline to his shoulder and tested the channel.

"Vale to surface team. Comm check."

Static, then a voice crackled through. "Surface team receiving. You're clear for submersion, Vale. Submersible is prepped at dock three."

"Copy." He tucked the rebreather into position, the mouthpiece settling between his teeth with the familiar rubber taste, and tested two slow breaths through it. Clean airflow. He switched the comm to broadcast mode so the surface team could hear his voice through the rebreather's integrated mic.

He walked along the platform to dock three, where the Heron-class submersible sat in its cradle — a small, ugly craft built for function, not aesthetics. Flat hull, twin thrusters, a reinforced acrylic viewport that had been scratched and fogged from dozens of prior dives. Robin climbed in, sealed the hatch, and went through the pre-dive sequence. Thrusters: green. Lights: green. Pressure seals: green. Life support: green. He gripped the controls and eased the submersible off the cradle, lowering it into the tank with a gentle splash.

The water swallowed the craft in stages — first the viewport, then the hull, then the thrusters, and the world outside shifted from fluorescent warehouse lighting to deep, filtered blue. The submersible's external lights flickered on, cutting twin beams through the murk. Particulate drifted in the water — biological matter, shed skin cells, the ambient soup of a living creature's environment. Robin adjusted his grip on the controls and tilted the craft forward, descending.

The restraints came into view first. Massive chain links anchored to the tank floor, padded with marine-grade polymer to prevent tissue damage. Hydraulic clamps at intervals along the body — limbs, torso, neck — each one monitored remotely by the surface team. And there, in the center of the restraint web, held in place like some enormous specimen pinned for display, the subject.

Robin eased off the thrusters and let the submersible hover at a distance, taking it in. The comm crackled softly in his ear as the surface team logged his position. He sat in the quiet hum of the submersible's systems, dark eyes scanning the restrained shape through the viewport, and let himself have a moment — just a moment — to process the scale of what he was about to climb inside.

Then he keyed the comm.

"Vale to surface. I have visual on the subject. Moving to position for jaw harness deployment." He paused, watching the creature's head turn faintly in the water, eyes — if it had them — tracking the submersible's lights. "First contact. Let's see how this goes."

He eased the thrusters forward, the submersible gliding through the water toward the subject's face, the jaw harness and speculum array secured to the craft's undercarriage, ready for deployment. His robotic hand rested on the deployment lever, fingers loose, patient. His expression behind the rebreather was flat, calm, tired — the face of someone who had done this before and would do it again.

"Alright," he said, his voice carrying through the underwater comm, directed at the restrained shape ahead. "My name is Robin. I'm your assigned researcher. I'm going to be conducting an examination of your mouth today — mapping tissue, checking your gill structures, taking samples. Standard intake. I'll be exiting my vehicle to do this, which means I'll be right there in the water with you."

The submersible's lights swept across the creature's face as he brought the craft closer, stopping within arm's reach of the mouth. He could feel the displaced water from the creature's breathing pushing against the hull in slow, rhythmic pulses.

"I'm going to attach a harness to keep your jaw open so I can work safely. It's not the most comfortable thing, but it won't hurt if you don't fight it." He rested his hand on the hatch release, preparing to cycle it for exit. "If you need me to stop, exhale hard through your nose — one long push. That's our signal. I'll back off and we'll reassess."

He waited. The water pulsed. The creature's body shifted faintly against the restraints. Robin watched, patient, his thumb resting on the hatch latch.

"So. Any objections, or are we doing this?"