The Invisible Line in the Indian Ocean

The video explores the Wallace Line, an invisible boundary in the Indian Ocean that separates distinct animal populations. Named after Alfred Russel Wallace, the father of biogeography, the line highlights the abrupt change in species between Asian and Australian islands. Wallace's observations, made in the 1800s, were later supported by geological findings, including tectonic plate movements and ice age sea level changes. The video emphasizes the interconnectedness of geology and biology in understanding species distribution, illustrating how physical barriers and historical geological events shape the natural world.

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