Submarine caves are underwater caverns formed by the erosion of rock, often created by the action of waves and currents over thousands of years. These caves can be found along coastlines and in deeper ocean areas, typically in limestone or volcanic rock. They provide unique habitats for various marine life, including fish, crustaceans, and other organisms that thrive in dark environments. Exploring submarine caves can be challenging due to their submerged nature and complex structures. Divers often use specialized equipment to navigate these underwater passages. Marine biologists study these caves to understand their ecosystems and the geological processes that shape them, contributing to our knowledge of oceanography.