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๐Ÿชธ Lagoons of New Caledonia: Reef Diversity and Associated Ecosystems: New Caledonian barrier reef

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๐Ÿชธ Lagoons of New Caledonia: Reef Diversity and Associated Ecosystems: New Caledonian barrier reef
Coral reef system in the South Pacific spanning 1,600 kilometres


🕐 3 min read · Updated 11 Apr 2026 at 07:55

UNESCOUNESCO World Heritage Site

๐Ÿ“Œ Fast Facts
  • Length: 1,600 kilometres in an almost unbroken arc
  • Status: Second-largest coral reef system globally
  • Marine species: Over 9,300 recorded species, many endemic
  • UNESCO inscription: 2008

The New Caledonian barrier reef is a coral reef system in the South Pacific that ranks as the second-largest on Earth. Stretching 1,600 kilometres in an almost unbroken arc around the islands of New Caledonia, it encompasses turquoise lagoons and deep-water ecosystems supporting over 9,300 recorded marine species, including organisms found nowhere else on Earth. The lagoons were inscribed as a UNESCO World Heritage Site in 2008, recognising their exceptional biodiversity and ecological ...

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