submechanophobia horror scene, dark industrial water tank at night, murky green liquid with oily surface reflections, dim sodium-yellow overhead lights flickering, metal scaffolding and pipes looming above, claustrophobic composition, cinematic 1980s practical effects horror aesthetic, analog grain, subtle chromatic aberration, heavy shadow and haze beneath the surface of the water, barely visible through the green opacity, the massive silhouette of a submerged mechanical beast coils along the tank floor, its shape indistinct but immense, unnatural faint glints of cold metallic eyes appear and disappear as the surface ripples, too symmetrical to be debris, too deliberate to be reflections a jagged suggestion of enormous rusted jaws sits just below visibility, slightly open, lined with uneven industrial teeth made of gears and broken metal plating, waiting thin streams of bubbles rise slowly from below as if something is breathing, patient, eager disturbances in the water subtly trace the outline of cables or tendrils shifting far beneath, circling foreground includes hoses and equipment dipping into the tank, implying feeding, maintenance, or something being sustained the horror is mostly hidden, only implied through faint shapes, reflections, and movement under the surface, deep dread, tension, unseen predator lurking just below, no clear full reveal --ar 2:3