A photorealistic depiction of an underwater scene featuring a massive glass dome encasing a miniature city. The dome's transparent walls allow natural light to filter in, casting an ethereal glow on the tranquil aquatic environment. Inside, a sprawling metropolis unfolds, complete with lush gardens, majestic palaces, winding roads, serene lakes, and meandering rivers. In the distance, majestic mountains rise from the ocean floor, their peaks disappearing into the darkness. Amidst this surreal landscape, schools of fish dart through the water, their scales shimmering in the soft light, as a majestic sea turtle glides effortlessly beneath the glass dome's surface.