An ancient, invisible boundary divides the wildlife of the Indonesian islands

The Invisible Barrier Keeping Two Worlds Apart · 9:25 · Video: PBS Eons · Watch at the source

In short: Between two Indonesian islands lies a mysterious, invisible line that separates distinct biological worlds. This video explores the nature of this geographic divide and why it remains a significant point of interest for understanding the distribution of life in the region.

The boundary, often referred to as an ancient line, exists between two islands in Indonesia. While it is physically invisible, it marks a stark transition in the types of flora and fauna found on either side, effectively keeping two distinct biological worlds apart.

This phenomenon highlights the complex ways geography influences evolution and species distribution. By examining this divide, researchers can better understand the historical and environmental factors that have shaped the unique biodiversity of the Indonesian archipelago.

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