Submarine communication refers to the transmission of information through underwater cables or wireless signals. This technology is essential for global communication, as it connects continents and enables internet access, telephone services, and data transfer. The most common method involves laying fiber optic cables on the ocean floor, which carry vast amounts of data at high speeds. In addition to cables, submarine communication can also utilize sonar technology, which sends sound waves through water. This method is often used for military purposes and underwater exploration. Overall, submarine communication plays a crucial role in modern connectivity and information exchange.