A smiling steampunk mermaid drifts through sunlit underwater currents

A detailed digital fantasy painting of a smiling steampunk mermaid submerged underwater. The mermaid has fair skin, blue eyes, and long, flowing blonde hair drifting in the water currents. She wears intricate brass and gold steampunk accessories, including a clockwork tiara fitted with cogs and a small watch face, ship-wheel earrings with blue gems, and a gear-laden armband with delicate chains. Her bodice is metallic teal and gold with rivets, matching a shimmering, iridescent scale-covered fish tail visible behind her. In the background, an ornate underwater steampunk castle with glowing windows stands amidst floating bubbles and scattered brass gears resting on the ocean floor. A mechanical brass fish with blue gemstone eyes swims nearby. Sunlight filters down through the clear blue water, creating bright caustics across the mermaid's skin and casting dynamic highlights on the polished metallic surfaces. The composition is a medium close-up shot captured with a shallow depth of field, keeping the subject sharply focused while softly blurring the underwater background. The color palette features rich golden brass, bright teal, oceanic blues, and soft skin tones. The style blends fantasy digital illustration with photorealistic textures, rendering metallic sheen, flowing water dynamics, and intricate clockwork details with high clarity and a dreamy, whimsical