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What is Wallace’s Line?
The Wallace Line runs up the Lombok Strait between Indonesian Islands Bali and Lombok. It continues north through the Makassar Strait that separates Borneo(Kalimantan) and Celebes (Sulawesi), turns east into the Pacific and then back north again to encompass the Philippines.
The so-called Wallace’s line refers to a biogeographic boundary that separates Asian animals from Australian ones. It defines most Philippine plants and animals. The boundary was named after the 19th-century English naturalist, explorer and writer Alfred Russel Wallace (1823-1913) who first noted the zoological and geographical differences between the Asian and Australian continents.
During his journeys through the Malay Archipelago, he noticed a sudden change in fauna after crossing a 35 km. (20 mi) strait between the Indonesian islands of Bali and Lombok. He noticed a region where the species present did not resemble one another despite the islands…
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