Photoreal Mermaid in a Desert Canyon Oasis

Photorealistic mermaid perched at the edge of a tranquil oasis pool inside a towering red sandstone desert canyon. Warm golden-hour light streams through a narrow skylight in the canyon roof, creating dramatic sunbeams and shimmering reflections on the water. The mermaid has a human upper body with long damp hair and a modest seashell bralette, and a iridescent turquoise-green tail with detailed scales that dips into the clear pool. She gazes toward the viewer as water ripples around her, droplets catching the light. The surrounding canyon walls show layered red, orange, and pink sandstone with weathered textures and canyon striations, while sparse desert vegetation and small pebbles dot the sandy bank. A light desert mist rises from the pool and a faint heat haze softens distant rocks, enhancing the surreal, otherworldly feel. Ultra-realistic skin textures, accurate water caustics, reflections, and natural color grading to emphasize the contrast between arid desert and lush sea.