Rock pools are shallow bodies of seawater that form in rocky coastal areas. They are created when the tide goes out, leaving behind small pockets of water in the depressions of rocks. These pools can vary in size and depth, and they often contain a variety of marine life, such as sea anemones, crabs, and starfish. The environment of rock pools can change dramatically with the tides, exposing them to air and sunlight during low tide. This unique habitat supports diverse ecosystems, as organisms must adapt to fluctuating conditions, including temperature and salinity. Rock pools are important for studying marine biology and ecology.