Atoll
An atoll is a ring-shaped island, surrounding a lagoon on the inside. There are about 440 in the world, and they are most common in the Pacific and Indian Ocean.
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An atoll is a ring-shaped island, surrounding a lagoon on the inside. There are about 440 in the world, and they are most common in the Pacific and Indian Ocean.
| This article is a stub. You can help Encyc by expanding it. |