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An atoll is a low, ring-shaped island, or a series of arc-shaped islands, forming the rim of a shallow lagoon. The structure results from an accumulation of coral on top of a sunken volcano.[1]

References

  1. ^ France, Peter, Guerrero, Angeles Gavira; et al. (2006). Ocean. Dorling Kindersley Inc. ISBN 9780756636920. 

External links

Anatomy of an amiotic egg This article is part of Project Glossary, a All Birds project that aims to write comprehensive articles on each term related to animals.


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