Wallacea

Wallacea is the group of islands within the red area. The Weber Line in blue has been used to separate Wallacea into a western part pertaining to Asia and an eastern part pertaining to Oceania.
The Sunda and Sahul shelves. Wallacea is the area in between.

Wallacea /wɒˈleɪsiə/ is a biogeographical designation for a group of mainly Indonesian islands separated by deep-water straits from the Asian and Australian continental shelves. Wallacea includes Sulawesi, the largest island in the group, as well as Lombok, Sumbawa, Flores, Sumba, and Timor. The islands of Wallacea lie between the Sunda Shelf (the Malay Peninsula, Sumatra, Borneo, and Java) to the west, and the Sahul Shelf, including Australia, New Guinea, and Maluku Islands to the south and east. The total land area of Wallacea is 347,000 km2 (134,000 sq mi).

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