Ultra-Realistic Underwater Snorkeling POV Cinematic Video

Create a 30-second ultra-realistic cinematic underwater POV filmed by a snorkeler in a clear, shallow turquoise Caribbean sea. A person's arm wearing a realistic wristwatch is visible in the lower-left foreground, while a softly blurred snorkel mask appears in the upper-right. Natural underwater movement, authentic marine life, realistic water physics, detailed coral textures, cinematic sunlight, immersive documentary realism, 4K. No text, logos, or watermarks. [0-5s] - UNDERWATER POV The camera gently descends beneath the crystal-clear turquoise surface. Dappled sunlight creates moving patterns across the water and white sandy seabed. The snorkeler's arm and wristwatch remain subtly visible in the foreground. [5-10s] - CORAL REEF The camera slowly glides forward above a vibrant coral reef. Colorful corals, sea fans, small tropical fish, and natural marine plants move gently with the current. Sun rays penetrate the surface, creating realistic caustic patterns across the reef. [10-16s] - SCHOOL APPEARS A large, dense school of yellowtail snapper gradually enters from the left. Hundreds of fish move together in coordinated formation, their silver bodies and vivid yellow tails catching flashes of sunlight. [16-22s] - FISH PASS-BY The school sweeps gracefully across the entire frame from left to right, passing relatively close to the camera. The fish maintain natural spacing and synchronized movement while the camera smoothly tracks alongside them. [22-27s] - CURVE INTO THE BLUE The school begins to curve away from the reef and into deeper blue water. The camera follows smoothly as the formation stretches into the distance, with the yellow tails becoming smaller against the turquoise ocean. [27-30s] - FINAL WIDE SHOT The camera slows and holds on the reef as the school disappears into the blue. Sunbeams shimmer through the water, small fish continue moving around the coral, and suspended particles drift naturally in the current. STYLE: ultra-realistic underwater documentary cinematography, physically accurate water movement, realistic fish behavior and schooling patterns, detailed coral reef textures, natural sunlight caustics, authentic underwater color and visibility, subtle camera motion from snorkeling, realistic depth and scale, cinematic composition, immersive POV, photorealistic marine life, 4K HDR. AUDIO: muffled underwater ambience, gentle water movement, subtle bubbles and distant marine sounds. No music, no narration.