Generate Polar Iceberg Danger Selfies

Create a photorealistic extreme danger selfie: Aspect ratio: 4:5 vertical. Scene: small icy research boat beside towering blue-white icebergs in rough polar water, cracked ice walls looming behind the person. Subject: the person in a heavy insulated parka and weatherproof hood, photographed like a real phone selfie in freezing conditions. Action and gaze: face toward camera, alert but natural. Composition: close-up to chest-up selfie, iceberg scale obvious behind the subject, boat rail low and not used as a leaning pose. Lighting: diffuse polar daylight, cold blue reflections, natural skin tones. Details: frost on fabric, sea spray on lens, ice cracks, rough water texture, visible breath. Text: no in-image text. Constraints: no watermark, no extra text, no logos, realistic anatomy, natural selfie framing, no heavy retouching.