Futuristic Underwater City

A striking digital illustration of a futuristic underwater city. The central focus is a colossal dome structure with intricate designs, illuminated from within. The surrounding water is teeming with colorful marine life, including schools of fish and glowing jellyfish. The sky above the water is visible through the dome, showing a clear day with a bright sun. In the foreground, a diver is seen swimming towards the city, highlighting the scale and wonder of the scene. The color palette is a mix of vibrant blues and greens, with touches of bright coral colors. The style blends science fiction with marine aesthetics, creating a sense of adventure and discovery.