Watercolor Dolphin in a Skyscraper Aquarium

Watercolor illustration of a graceful dolphin swimming inside a colossal glass tank that climbs several floors within a futuristic skyscraper atrium. Use soft blue-green watercolor washes with gentle color bleeding. Sunlight pours through a high glass dome and tall windows, casting shimmering reflections on the water and the dolphin's silver-blue skin. Surrounding the tank are lush tropical plants, a marble lobby, and silhouettes of astonished office workers in suits looking up and pointing. The exterior reveals a city skyline at dusk. The painting should feel dreamlike and surreal, with loose, fluid strokes and soft edges typical of watercolor art.