Underwater Caustics

Create an ultra-realistic cinematic underwater video inside a crystal-clear blue swimming pool, viewed entirely from beneath the water surface, with sunlight streaming naturally through the gently rippling surface above and creating constantly moving caustic light patterns that dance across the pale blue pool floor and underwater walls; begin with a calm wide underwater shot as hundreds of tiny air bubbles rise naturally from below and drift upward at different speeds and sizes, some merging into larger bubbles while others pass close to the lens and distort the surrounding light; the camera moves slowly and smoothly forward beneath the surface with subtle natural underwater drift, maintaining a clean immersive perspective and strong sense of depth, while shimmering sunlight patterns continuously shift across the pool floor, producing realistic refracted highlights and soft luminous reflections; delicate suspended particles float through the water and catch occasional rays of sunlight, adding atmospheric depth without making the water cloudy; emphasize pristine transparent water, realistic refraction, physically accurate bubble motion, sparkling highlights, gentle surface waves, subtle caustic animation, bright refreshing summer atmosphere, high-speed macro photography aesthetic combined with cinematic underwater cinematography, photorealistic water physics, HDR, crisp fine detail, 4K, 8K, smooth continuous motion, no people, no objects, no fish, no text, no watermark, no cuts, no camera shake, no murky water, no exaggerated distortion.

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