Underwater Room Effect

ROLE
Act as a senior professional photo retoucher, image editor, photographer, compositing artist, underwater cinematography specialist and AI image-editing specialist. Perform a controlled, production-quality transformation of the uploaded image. Treat the source photograph as the ground truth for the human subject, environment, composition, geometry, perspective and recognizable scene details.

EDIT
Transform the entire photographed environment into a hyper-realistic fully submerged underwater scene while preserving the original room or interior structure, human subject, composition and recognizable objects. Make it appear as though the existing location has been completely filled with clear water, with realistic underwater light behavior, caustic patterns, suspended particles, subtle floating objects and natural aquatic depth.

PRIMARY OBJECTIVE
Execute the requested "Underwater Room Effect" convincingly and photorealistically. The finished image should look like the exact original location has somehow become completely submerged underwater while remaining structurally intact.

The viewer should immediately recognize both the original scene and the underwater transformation. The result must resemble high-end underwater photography rather than a blue filter, flooded-floor effect or fantasy ocean environment.

EDITING PRIORITY
1. Preserve the human subject's exact recognizable identity and appearance.
2. Preserve the original room, environment and scene geometry.
3. Make the entire photographed space convincingly submerged underwater.
4. Create physically believable underwater lighting, caustics, particles, depth and optical behavior.
5. Integrate subtle floating elements without cluttering or redesigning the scene.

FULL SUBMERSION
- Treat the entire visible photographed space as being underwater.
- Water must occupy the full three-dimensional environment rather than appearing only on the floor.
- Do not create a visible waterline across the room.
- Do not make the effect resemble ordinary flooding.
- The camera, subject and environment should all appear submerged beneath the same body of water.
- Maintain a coherent underwater atmosphere from foreground to background.
- Keep the water relatively clear so the original location and subject remain recognizable.
- Use depth-dependent atmospheric attenuation rather than covering everything with a uniform blue overlay.

ENVIRONMENT PRESERVATION
- Preserve the exact recognizable structure of the original location.
- Preserve walls, floors, ceilings, windows, doors, furniture, stairs and architectural details.
- Preserve existing objects and their recognizable design.
- Preserve the original spatial layout and depth relationships.
- Do not replace the interior with an ocean, reef, aquarium or unrelated underwater location.
- Do not destroy or decay the room.
- Do not add shipwreck damage.
- Do not cover surfaces with excessive algae, coral or marine growth.
- The scene should remain the same location, simply existing underwater.

HUMAN SUBJECT PRESERVATION
- Keep every human subject photorealistic and immediately recognizable.
- Preserve exact facial identity.
- Preserve facial structure, skin tone and apparent age.
- Preserve hairstyle, hair length, hair color and facial hair.
- Preserve body proportions and anatomy.
- Preserve clothing, footwear, jewelry and visible accessories.
- Preserve tattoos and other distinguishing details.
- Do not redesign the person's outfit.
- Do not transform the person into a swimmer, diver, mermaid or fantasy character.
- Do not add diving equipment.
- Do not add goggles, masks, oxygen tanks or snorkels.
- Do not alter facial identity to simulate underwater distortion.

HAIR & CLOTHING RESPONSE
- Introduce only physically plausible underwater behavior.
- Allow loose hair strands to drift subtly upward or outward according to buoyancy.
- Preserve the person's original hairstyle strongly enough that they remain recognizable.
- Allow loose fabric edges to respond subtly to the surrounding water.
- Keep fitted clothing close to the body.
- Do not completely redesign the pose or silhouette.
- Keep underwater movement restrained and realistic.
- Avoid extreme floating hair that obscures the face.
- Avoid balloon-like or unnaturally inflated clothing.

UNDERWATER LIGHTING
- Simulate physically believable underwater illumination.
- Preserve the source scene's underlying light direction wherever possible.
- Introduce soft aquatic light scattering throughout the environment.
- Add realistic moving-style caustic light patterns on appropriate surfaces.
- Caustics may appear subtly across walls, floors, furniture, clothing and skin where physically plausible.
- Keep caustics irregular, organic and directionally coherent.
- Use brighter caustics near surfaces receiving stronger illumination and softer patterns deeper in shadow.
- Maintain believable highlight and shadow relationships.
- Do not cover every surface with equally strong caustics.

COLOR & LIGHT ATTENUATION
- Introduce a restrained cool aquatic color influence.
- Preserve believable skin tones despite underwater color absorption.
- Allow distant areas to shift slightly toward cyan or blue-green according to depth.
- Maintain richer neutral colors in nearby subjects and objects.
- Reduce distant contrast naturally.
- Preserve realistic black levels and highlight detail.
- Avoid a uniform cyan filter.
- Avoid extreme blue monochrome processing.
- Avoid oversaturated tropical-aquarium colors.
- Keep the original scene's color relationships recognizable beneath the underwater treatment.

VOLUMETRIC WATER DEPTH
- Create subtle underwater atmospheric perspective.
- Use suspended microscopic particles to communicate water volume.
- Keep particles varied in size, brightness and focus.
- Use more visible particles where light beams naturally illuminate them.
- Reduce clarity gradually with physical distance.
- Preserve strong subject readability.
- Keep foreground areas comparatively clear.
- Do not use excessive fog or haze.
- Do not make the room look smoky.

SUSPENDED PARTICLES
- Add a controlled amount of tiny organic underwater particulate matter.
- Vary particle distance from the camera.
- Allow extremely close particles to become softly defocused.
- Keep mid-distance particles small and subtle.
- Avoid evenly distributed computer-generated dots.
- Do not turn particles into magical sparkles.
- Do not use glowing fantasy particles.
- Keep large portions of the frame visually clean.

FLOATING OBJECTS
- Allow a small number of suitable lightweight objects already present in the original scene to float subtly where physically plausible.
- Preserve each object's original design, material and color.
- Keep heavier furniture and permanently fixed objects in their original positions.
- Do not randomly make every object float.
- Maintain believable buoyancy and orientation.
- Avoid cluttering the image with excessive debris.
- Do not invent large amounts of new floating objects merely to emphasize the effect.

BUBBLES
- Add only a restrained amount of realistic bubbles where physically plausible.
- Bubbles should rise vertically according to gravity.
- Vary bubble size naturally.
- Keep them transparent and optically realistic.
- Do not surround the entire person with excessive bubbles.
- Do not use decorative bubble overlays.
- Do not obscure the subject's face with bubbles.

OPTICAL WATER BEHAVIOR
- Simulate subtle underwater light scattering and refractive behavior.
- Maintain photographic sharpness around the main subject.
- Allow distant details to soften naturally through the water volume.
- Preserve straight architectural geometry rather than introducing arbitrary wavy distortion.
- Use refraction only where physically justified.
- Do not apply global ripple distortion to the photograph.
- Do not make the scene look as though it is being viewed through aquarium glass.
- Maintain realistic photographic clarity.

DEPTH & PERSPECTIVE
- Preserve the original camera position and perspective.
- Preserve the source lens characteristics.
- Maintain existing vanishing points and architectural geometry.
- Keep object scale and depth relationships unchanged.
- Apply underwater atmospheric attenuation according to actual scene depth.
- Match depth of field to the original photograph.
- Do not artificially blur the entire background.
- Preserve appropriate sharpness around the main subject.

PHYSICAL INTEGRATION
- Treat the water as occupying the same three-dimensional space as every existing element.
- Apply underwater lighting consistently to people, furniture, architecture and objects.
- Maintain correct occlusion between all existing scene elements.
- Allow caustics to follow real surface geometry.
- Allow particles and bubbles to exist at varied physical depths.
- Preserve realistic shadows beneath and around existing objects.
- Do not make the environment appear digitally pasted behind the subject.

STRICT PRESERVATION RULES
- Preserve the exact human identity.
- Preserve the original face and expression.
- Preserve clothing and accessories.
- Preserve the original body proportions and anatomy.
- Preserve the original environment and recognizable location.
- Preserve architecture and major objects.
- Preserve the original crop, framing and aspect ratio.
- Preserve the original camera position and perspective.
- Do not introduce unrelated people.
- Do not introduce unrelated furniture or structures.
- Do not transform the location into an underwater ruin.
- Do not add unnecessary marine life.
- The underwater transformation should be the only significant environmental change.

REALISM & INTEGRATION
- Match the source photograph's grain, noise, sharpness and compression characteristics.
- Maintain realistic skin texture.
- Maintain realistic fabric and material texture.
- Use natural aquatic light scattering rather than artificial glow.
- Maintain coherent depth-dependent color attenuation.
- Kee