Generate Shark Cage Danger Selfies

Create a photorealistic extreme danger selfie: Aspect ratio: 4:5 vertical. Scene: underwater inside a metal shark cage, deep blue ocean around the person, a large shark passing outside the cage in the background. Subject: the person in diving gear with, photographed like a real underwater action-camera selfie. Action and gaze: face toward camera, intense but readable. Composition: close-up to chest-up selfie, cage bars creating depth, shark visible outside and not blocking the face. Lighting: filtered blue underwater daylight, realistic caustics, natural suspended particles. Details: bubbles, wetsuit neoprene, metal cage scratches, water distortion, realistic skin texture where visible. Text: no in-image text. Constraints: no watermark, no extra text, no logos, realistic anatomy, natural selfie framing, no heavy retouching.