Elephants utilize their keen sense of hearing to communicate over long distances by producing low-frequency infrasound vocalizations that can travel long distances through various types of terrain. These vocalizations can be heard by other elephants several miles away, allowing them to communicate about food sources, mating opportunities, or potential dangers. Additionally, elephants can pick up on these distant sounds using their large ears and sensitive hearing, enabling them to stay connected with other elephants in their herd even when they are far apart.