Komodo dragons are from a small group of islands in southeastern Indonesia, but fossil evidence shows they originally evolved in ancient Australia before spreading west.

Native range today

  • Komodo dragons are endemic to a few Indonesian islands: Komodo, Rinca, Gili Motang, Gili Dasami, and parts of Flores.
  • These islands are mostly dry, volcanic, and covered in savanna grassland, open woodland, and some mangroves, which suits their ambush-hunting lifestyle.

Deep-time origins

  • Paleontologists analyzing fossils from Australia, Timor, Flores, Java, and India concluded that Komodo dragons most likely evolved in Australia as large varanid lizards.
  • From there, they dispersed westward and reached Flores by about 900,000 years ago, later surviving only on the Indonesian islands where they live today.

How they got to Indonesia

  • During past ice ages, sea levels were much lower, creating land bridges or shorter sea crossings that allowed Komodo dragons to move from Australia toward what is now eastern Indonesia.
  • Once sea levels rose again, the populations on Komodo, Rinca, Flores, and nearby islands became isolated, creating the very limited modern range people visit now.

Information gathered from public forums or data available on the internet and portrayed here.