Underwater infrastructure refers to the systems and structures built beneath the surface of oceans, rivers, and lakes. This includes pipelines for transporting oil and gas, cables for telecommunications, and tunnels for transportation. These installations are crucial for connecting different regions and facilitating trade and communication. Maintaining underwater infrastructure is essential for safety and efficiency. Regular inspections and repairs are necessary to prevent leaks and damage from natural events like storms or earthquakes. Technologies such as remotely operated vehicles (ROVs) and sonar are often used to monitor the condition of these underwater systems, ensuring they function properly and remain secure.