Black sand beaches are unique coastal areas where the sand is primarily composed of volcanic minerals and lava fragments. This striking black color is a result of volcanic activity, often found in regions with active or recently active volcanoes, such as Hawaii and Iceland. The dark sand absorbs more heat from the sun, making these beaches warmer than their lighter-colored counterparts. These beaches are not only visually stunning but also serve as important ecosystems. The black sand can provide a habitat for various marine life and contribute to the geological processes of the area. Visitors often enjoy the contrast of the black sand against the blue ocean, creating picturesque landscapes.