Which strait separates Borneo from Sulawesi in Indonesia?

The Makassar Strait separates Borneo from Sulawesi in Indonesia.

It runs between Indonesia’s Kalimantan region on Borneo and Sulawesi’s western coast. To the north, it opens into the Celebes Sea; to the south, it connects with the Java Sea. The strait is an important shipping route through Southeast Asia.

Several major ports lie along its shores, including Balikpapan and Bontang on Borneo, and Makassar, Palu, and Parepare on Sulawesi. The Mahakam River also empties into the strait from Borneo.

A common mix-up is the Sunda Strait, which separates Java from Sumatra, or the Lombok Strait, between Bali and Lombok. The Makassar Strait is also associated with the Wallace Line, a major biogeographic boundary that runs through the Indonesian archipelago.