A marine aquarium is a type of aquarium that houses saltwater fish and other marine organisms. It replicates the natural ocean environment, providing a habitat for species such as coral, anemones, and various types of fish. These aquariums can vary in size, from small home setups to large public displays. Maintaining a marine aquarium requires careful attention to water quality, temperature, and salinity. Specialized equipment, such as protein skimmers and filtration systems, is often used to ensure a healthy environment. Marine aquariums can be visually stunning and serve as an educational tool about ocean ecosystems.