Ring-shaped island

The term “atoll” is used to describe a ring-shaped coral island that surrounds a lagoon. Atolls are formed by coral reefs that grow on top of a submerged volcanic crater, eventually creating an island that encircles a body of water. The word “atoll” comes from the Maldivian language, and it was first used to describe the islands in that region. Today, atolls can be found in many places around the world, including the Pacific Ocean, the Indian Ocean, and the Caribbean. They are known for their stunning natural beauty and unique ecosystems, which are home to a wide variety of plant and animal species.