Description: An atoll is a type of geological formation consisting of a ring-shaped coral reef that surrounds a central lagoon. These marine ecosystems are formed from the accumulation of corals and other marine organisms that, over time, create a structure that can be visible above the water’s surface. Atolls are typically found in tropical and subtropical waters and are the result of geological processes such as erosion and sedimentation that occur over thousands of years. Their ring shape is characteristic, and they can vary in size from small islets to large formations that host diverse species of flora and fauna. Atolls are important not only for their natural beauty but also for their role in marine biodiversity, as they provide habitats for a wide variety of species, including fish, birds, and other marine organisms. Additionally, their structure protects coastlines from erosion and acts as a natural barrier against waves and storms, making them crucial elements in coastal ecosystems.
