The Islands are Formed Entirely from Coral, Not Volcanic Rock
Îles Cocos

The Islands are Formed Entirely from Coral, Not Volcanic Rock

Unlike many oceanic islands, the Cocos (Keeling) Islands are true coral atolls, meaning they are rings of coral reefs built atop submerged ancient volcanoes. The visible landmass is entirely biogenic, created by living organisms over millennia.

Source

https://en.wikipedia.org/wiki/Cocos_(Keeling)_Islands#Geography

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Publié le
March 30, 2026
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