Islands

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The Seychelles has the highest number of endemic amphibians in the world, such as this Thomasset’s frog.

Island Facts

  • There are over 175,000 islands on Earth.
  • Islands vary in size from just 0.15 square kilometres up to 2.2 million square kilometres.
  • Madagascar is thought to be the world’s oldest island.
  • Many island species are endemic, occurring nowhere else on Earth.
  • Islands sustain over 50 percent of the world’s marine biodiversity.