Create an innovative architectural design for an eco-friendly underwater residence, located in a coastal marine environment. The structure should accommodate a family, providing comfort, safety, and modern living standards while integrating seamlessly with the ocean ecosystem. Consider using durable, corrosion-resistant materials suitable for long-term underwater habitation and capable of withstanding ocean pressure. The design should feature large, transparent windows or observation domes to offer panoramic views of marine life. Ensure the residence includes renewable energy solutions like tidal or solar power and an efficient water filtration system. The layout should be functional and modular, incorporating private living spaces, common areas, and recreational zones, all while maximizing natural light through strategic placement and artificial lighting that respects the aquatic surroundings. Additionally, integrate smart technology for home automation and environmental monitoring to enhance the living experience.