Produced by: Manoj Kumar
Only 15 miles wide, this invisible barrier splits Asia and Australia, creating two completely separate ecosystems.
On one side, tigers and elephants roam. On the other, kangaroos and cockatoos thrive—despite their close proximity.
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Unlike other regions that connected during ice ages, the Makassar Strait never dried up, keeping species isolated for millions of years.
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In 1859, Alfred Russel Wallace noticed a sudden change in wildlife, laying the foundation for biogeography and natural selection.
Even birds don’t cross—hornbills and pheasants stay in Asia, while cockatoos and parrots remain in Australia, adapting to their environments.
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New research suggests the Wallace Line may be misplaced, as genetic studies reveal deeper evolutionary connections across the region.
Even ancient human migration followed the Wallace Line, shaping distinct languages, genetics, and cultures on either side.
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Rising temperatures and habitat destruction may be blurring the Wallace Line, allowing species to cross for the first time.
More than just an ocean trench, the Wallace Line is an evolutionary force, proving geography can shape life itself.