A dynamic medium shot from a low angle shows a mermaid girl floating horizontally within a crystalline ocean, with the shimmering water surface visible above her. She has long, loosely waved teal hair that fades to white at the tips, drifting fluidly in the current. Her eyes are a deep sapphire blue, and she wears a teal halter-neck bra. Her lower body is a sleek teal fish tail ending in long, flowing white fins. She floats peacefully, her hands gently brushing the water around her. The surrounding environment features a vibrant coral reef and schools of countless tiny fish swimming near the surface. The scene is illuminated by sunlight filtering through the water, creating sparkling caustic patterns. The visual style is a watercolor medium on paper texture, featuring loose linework that blends into translucent washes with gentle color bleeding and layered stains, evoking a serene and ethereal atmosphere.