A submarine cave is a natural underwater cavern formed by the erosion of rock, typically limestone, due to the action of water. These caves can be found along coastlines or beneath the ocean, often connected to the surface through sinkholes or underwater passages. They are home to unique ecosystems and can contain freshwater pools, marine life, and interesting geological formations. Exploration of submarine caves is often conducted by divers and researchers, as they provide valuable insights into geological processes and marine biodiversity. Some famous examples include the Blue Hole in Belize and the Cenotes in Mexico, which attract both scientists and adventure seekers alike.