![Illustration of an atoll, a ring-shaped island formed from coral reef that encircles a lagoon Stock Photo - Alamy Illustration of an atoll, a ring-shaped island formed from coral reef that encircles a lagoon Stock Photo - Alamy](https://l450v.alamy.com/450v/2jk2t2b/illustration-of-an-atoll-a-ring-shaped-island-formed-from-coral-reef-that-encircles-a-lagoon-2jk2t2b.jpg)
Illustration of an atoll, a ring-shaped island formed from coral reef that encircles a lagoon Stock Photo - Alamy
![SERIOUSLY STRANGE on X: "A ring-shaped island known as Tikehau, located in the Pacific Ocean. https://t.co/SO0tdEIi37" / X SERIOUSLY STRANGE on X: "A ring-shaped island known as Tikehau, located in the Pacific Ocean. https://t.co/SO0tdEIi37" / X](https://pbs.twimg.com/media/CsUSAtxVUAAXM15.jpg)
SERIOUSLY STRANGE on X: "A ring-shaped island known as Tikehau, located in the Pacific Ocean. https://t.co/SO0tdEIi37" / X
![IJsseloog artificial ring island in Ketelmeer Lake in the Netherlands was built to hold huge amounts of toxic dirt. IJsseloog artificial ring island in Ketelmeer Lake in the Netherlands was built to hold huge amounts of toxic dirt.](https://compote.slate.com/images/38f2f387-8517-46d5-a904-0888e797986e.jpg)
IJsseloog artificial ring island in Ketelmeer Lake in the Netherlands was built to hold huge amounts of toxic dirt.
Divephoria - Satonda is an island in West Nusa Tenggara province of Indonesia. It is off the north coast of Sumbawa island The island is extremely exotic, ring-shaped small island with a
![attol - a ring-shaped reef, island, or chain of islands formed of coral. | Birds eye view, Atoll, Birds eye attol - a ring-shaped reef, island, or chain of islands formed of coral. | Birds eye view, Atoll, Birds eye](https://i.pinimg.com/1200x/5d/0c/17/5d0c17601c445bf604372494174c6a99.jpg)
attol - a ring-shaped reef, island, or chain of islands formed of coral. | Birds eye view, Atoll, Birds eye
![Geology Science on Instagram: “THE KURIL ISLANDS form part of the ring of tectonic instability encircling the Pacific O… | Kuril islands, Vacation locations, Island Geology Science on Instagram: “THE KURIL ISLANDS form part of the ring of tectonic instability encircling the Pacific O… | Kuril islands, Vacation locations, Island](https://i.pinimg.com/1200x/07/e6/39/07e63978b07998b21a32ebe693c4efb9.jpg)