An underwater habitat is a structure designed for humans to live and work beneath the ocean's surface. These habitats provide a controlled environment where researchers can study marine life, conduct experiments, and explore underwater ecosystems. They are often equipped with life support systems to supply air, water, and food. One well-known example of an underwater habitat is the Aquarius Reef Base, located off the coast of Florida. This facility allows scientists to stay submerged for extended periods, facilitating in-depth research on coral reefs and other marine environments. Underwater habitats play a crucial role in advancing our understanding of oceanography and marine biology.