制作一段30秒的超写实电影级水下主观视角（POV）画面，由一位浮潜者在清澈、浅水、翠绿色的加勒比海中拍摄。左下角前景中出现一只佩戴着写…

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.

制作一段30秒的超写实电影级水下主观视角（POV）画面，由一位浮潜者在清澈、浅水、翠绿色的加勒比海中拍摄。左下角前景中出现一只佩戴着写实手表的手臂，右上角则隐约出现一具轻微模糊的浮潜面镜。包含自然的水下运动、真实的海洋生物、逼真的水体物理、精细的珊瑚纹理、电影级的阳光效果、沉浸式纪录片的真实感，4K画质。无文字、标志或水印。 [0–5秒] — 水下主观视角（UNDERWATER POV） 镜头缓缓下潜至清澈翠绿的水面之下。斑驳的阳光在水体与白色沙质海床上投射出流动的光纹。浮潜者的手臂与手表在前景中保持若隐若现的存在。 [5–10秒] — 珊瑚礁（CORAL REEF） 镜头在一片生机勃勃的珊瑚礁上方缓缓向前滑行。色彩斑斓的珊瑚、海扇、小型热带鱼类与天然海生植物随水流轻柔摇曳。阳光穿透水面，在礁石上形成逼真的焦散光纹。 [10–16秒] — 鱼群出现（SCHOOL APPEARS） 一大群密集的黄尾笛鲷（yellowtail snapper）从左侧缓缓进入画面。数百条鱼协同成阵、整齐划一地游动，它们的银色身躯与鲜艳的黄色尾部捕捉着阳光的瞬光。 [16–22秒] — 鱼群掠过（FISH PASS-BY） 鱼群优雅地横扫整个画面，由左向右游动，从相对靠近镜头的地方掠过。鱼类保持着自然的间距与同步的游动姿态，镜头平滑地与鱼群并行跟随。 [22–27秒] — 转向深蓝（CURVE INTO THE BLUE） 鱼群开始从珊瑚礁处转弯，游向更深的蓝色水域。镜头平稳跟随，鱼群阵型向远处延展，黄色的尾部在翠绿的大洋背景中逐渐变小。 [27–30秒] — 最终全景镜头（FINAL WIDE SHOT） 镜头减速并停留在珊瑚礁上，鱼群逐渐消失在蓝色深处。光柱透过水面闪烁，小鱼继续在珊瑚之间游弋，悬浮颗粒随水流自然漂动。 风格（STYLE）：超写实水下纪录片电影摄影，物理上准确的水体运动，逼真的鱼类行为与群游模式，精细的珊瑚礁纹理，自然阳光焦散，真实的水下色彩与能见度，来自浮潜的微妙镜头运动，逼真的纵深与尺度感，电影级构图，沉浸式主观视角，照片级真实的海洋生物，4K HDR。 音频（AUDIO）：闷沉的水下环境音，柔和的水流声，微弱的气泡声与远处的海洋声响。无音乐，无旁白。