Marine rock formations are natural structures found in oceans and seas, created by geological processes over millions of years. These formations can include coral reefs, sea stacks, and underwater caves, which provide habitats for various marine life. They are often shaped by erosion, sedimentation, and tectonic activity. These formations play a crucial role in marine ecosystems, offering shelter and food for species such as fish, crustaceans, and mollusks. Additionally, they can influence ocean currents and contribute to coastal protection, making them important for both biodiversity and human activities like fishing and tourism.