A high-detail medium shot from a side angle of a young girl with a childlike face, designed as a high-end PVC figure, floating gracefully in a deep scarlet underwater world. She is a mermaid with silver hair styled in a very long braided high ponytail and long side-locks reaching her chest, adorned with gold ornaments. She has finned ears, glowing red crystal eyes with long black lashes, and a small gold piercing. She wears a white and gold embroidered cross halter-neck made of flowing water, revealing her collarbones and midriff, paired with a white and gold embroidered loincloth. Her body features healthy, glossy skin with water droplets, metallic red shimmering scales, and massive metallic red wings with golden claws. She wears ornate gold and metallic red bracelets and gold side-armor on her hips, with fine gold chains draped across her form. She tilts her head with an innocent smile, gripping a long white trident with golden decorations and a red crystal blade. The scene is set near the ocean floor in a crimson atmosphere, featuring intense backlight, strong rim lighting, Tyndall effect, and lens flares, creating a mystical, dynamic sense of motion with swirling currents and multiple reflections.