Empty Pool at Night — Chlorine Blue Dread

A dread-soaked 8-second horror short, 16:9, filmed from the tip of a high diving board above a drained Olympic swimming pool at night, the camera staring the full length of the empty basin. The hook: the deep end's shadow is darker than the pool's geometry allows — and it is spreading.
0-2s: The shot opens locked at the board's tip, swaying almost imperceptibly with the fiberglass flex. Below, fifty meters of empty pool: lane markings ghosting across the sloped floor, stenciled depth numbers, and the underwater lights burning in the empty basin — chlorine-blue floods the concrete, humming in the dark. The board creaks under weight no one is standing on.
2-5s: The sway widens. In the deep end, a black rectangle lies across the sloped floor where the shadow should fall — too dark for the lights, a flat absence drinking the blue. It spreads like ink in water, climbing the pool's walls though there is no water, swallowing lane lines.
5-8s: From the deep-end shadow comes a wet sound — something hauling itself up the slope, leaving a glistening trail on the dry concrete, dragging toward the shallow end where the camera hangs. The board dips sharply, once, as if stepped on. Cut on the creak, hard to black. Craft: the empty Olympic pool is the subject — lane geometry, depth numbers, the board's textured tip; no actors, only implication. Camera: locked high-angle POV from the board tip, a slow pendulum sway that widens with tension, anamorphic feel with faint horizontal flare off the underwater lights. Lighting: chlorine-blue floods as the single source in night black, deep cyan shadows, specular glints crawling along the glistening trail. Atmosphere: aquatic dread without water, vertigo, the certainty of being watched from below. Style: photorealistic night horror, high-angle vertigo, slow sway, blue-black palette, subtle film grain, 24fps, 8 seconds, 16:9.