Wallace's line
noun
Wal·lace's line
ˈwä-lə-səz- 
: a hypothetical boundary that separates the highly distinctive faunas of the Asian and Australian biogeographic regions and passes between the islands of Bali and Lombok in Indonesia, between Borneo and Sulawesi, and between the Philippines and the Moluccas
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“Wallace's line.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Wallace%27s%20line. Accessed 5 May. 2025.
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