An oceanic ridge is an underwater mountain range formed by tectonic plate movements. These ridges are created at divergent boundaries, where two tectonic plates move apart, allowing magma to rise and solidify, creating new oceanic crust. The most well-known example is the Mid-Atlantic Ridge, which runs down the center of the Atlantic Ocean. Oceanic ridges are significant for their role in the Earth's geology and ecosystem. They are often associated with volcanic activity and hydrothermal vents, which support unique marine life. The ridges also influence ocean currents and climate patterns, making them important for understanding global environmental systems.