Hyperrealistic depiction of Underwater City, a city built beneath the ocean, with massive glass domes housing buildings and streets. Bioluminescent sea creatures swim outside the domes, casting a soft glow over the city. The streets are filled with people, some of whom have adapted to the underwater environment with gills or other modifications.Artificial coral gardens with embedded LEDs that change color based on the time of day or weather conditions.Glowing lines embedded in the seabed that delineate different areas of the city, glowing with vibrant neon hues. Glowing veins of light embedded in the seafloor, creating intricate patterns that pulse gently. Fiber optic cables that run through the city, their tips glowing and creating a network of illuminated threads.