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Satellite pictur o the Atafu atoll in Tokelau in the Paceefic Ocean.

An atoll (/ˈætɒl/ or /əˈtɒl/)[1] is a ring-shaped coral reef includin a coral rim that encircles a lagoon pairtially or completely. Thare mey be coral islands/cays on the coral rim.[2](p60) [3]

References[eedit | eedit soorce]

  1. pronunciation in auld video on youtube, Bikini Atoll video
  2. Blake, Gerald Henry, ed. (1994). [Google books World Boundary Series] Check |url= value (help). 5 Maritime Boundaries. Routledge. ISBN 978-0-415-08835-0. Retrieved 12 Februar 2013.
  3. Piotr Migon (2010). Geomorphological Landscapes of the World. Springer. p. 349. ISBN 978-90-481-3055-9. Retrieved 12 Februar 2013.