Marine aquariums are specialized tanks designed to house and display marine life, such as fish, corals, and invertebrates. These aquariums mimic ocean environments, providing the necessary conditions for saltwater species to thrive. They require careful management of water salinity, temperature, and filtration to maintain a healthy ecosystem. Setting up a marine aquarium involves selecting appropriate equipment, such as filters and heaters, and choosing compatible species. Popular marine fish include clownfish and tangs, while coral species like anemones and soft corals add color and diversity. Regular maintenance is essential to ensure the well-being of the inhabitants.