background and environment A deep open-ocean underwater environment with a dominant dark blue palette shifting into deep navy and cold teal. The water surface is visible far above with soft ripples and strong light refraction. The background darkens rapidly with depth. Fine particulate matter is suspended throughout the water column. A small number of distant fish silhouettes appear far behind the product, sparse, soft, and heavily diffused by depth haze. Numerous air bubbles rise upward past the product. camera and framing 1:1 composition. The camera is positioned well below the product, pulled back, and angled upward toward the distant water surface. The product occupies a restrained portion of the frame, surrounded by large negative space. Strong vertical depth is emphasized, with the background receding into darkness. Depth of field keeps the product sharp while distant fish, bubbles, and particles soften progressively with distance. subject and pose or placement A single solid product object descending through the water at a diagonal angle. The lower portion sits slightly deeper than the upper portion, with the overall orientation angled upward toward the surface. The product faces mostly toward the camera with a subtle rotation, never perfectly squared, reinforcing a natural, gravity-driven descent. product behavior and physical interaction The product is actively sinking due to weight. Gravity pulls it downward while water resistance introduces slight tilt and drag. Air bubbles detach from the product’s surface and rise upward in the opposite direction, some briefly sliding along edges before separating. Larger bubbles cluster closer to the product, while smaller bubbles disperse upward. The distant fish remain unaffected, reinforcing scale and realism. No artificial supports are visible. lighting and materials A narrow, intense light source penetrates from the water surface above, producing strong, concentrated shafts of light. Illumination strikes primarily the upper portion of the product, creating sharp highlights along edges, contours, and surface details. Light falls off rapidly across the form, with lower areas sinking into deep blue shadow. Materials display realistic surface response, refraction or reflection where applicable, and physically accurate edge highlights. Reflections align strictly with the vertical light direction and surrounding water volume. Overall contrast is high, with deep blues and bright cyan highlights. final constraints The inserted product must remain exactly true to its real-world shape, proportions, materials, surface finish, textures, labels, logos, typography, and markings, rendered sharp and physically accurate. Only water, bubbles, particulate matter, light shafts, and distant fish silhouettes are allowed. Fish must remain small, soft, and background-only. The product must clearly appear to be sinking, never floating or hovering. All motion, lighting, reflections, color tone, and depth behavior must follow real underwater physics. Photorealistic, studio-grade rendering with a dark blue, high-depth, cinematic underwater mood, suitable for high-resolution output.