underwater cities

Underwater cities are hypothetical or experimental habitats built beneath the ocean's surface, designed to support human life for extended periods. They leverage advancements in engineering, materials, and life-support systems to withstand water pressure, protect against corrosion, and sustain oxygen and waste management. Such habitats could serve scientific research, conservation, or future urban expansion, offering a unique environment for studying marine life and climate change while addressing land scarcity. Although mainly in conceptual or early development stages, underwater cities aim to blend human innovation with ocean ecosystems responsibly and sustainably.