An expansive underwater city teeming with life, built into coral reefs. Tall spires made of coral and bioluminescent materials glow in the ocean depths, while mermaids and sea creatures swim between the structures. Fish of all colors dart through the currents, and enormous sea turtles glide peacefully above. The light from the surface filters down, creating shimmering patterns on the city’s buildings. The whole scene is vibrant and alive with movement.