A rendering of a tall building with a lot of windows

magine an architectural concept for an underwater city located in the depths of the Pacific Ocean. This city should have a population capacity of 10,000 people and include residential areas, commercial zones, recreational spaces, and research facilities. The design should prioritize sustainability, energy efficiency, and a harmonious coexistence with the surrounding marine ecosystem. Consider the challenges of pressure, temperature, and resource management in this unique environment while ensuring the well-being and safety of the city's residents.