Celebes Sea
The main maritime disputes between Indonesia and Malaysia have occurred in the Celebes Sea. Both countries previously claimed sovereignty over the Ligitan and Sipadan islands. The dispute over the Ambalat block of the Celebes Sea seabed, believed to be rich in mineral resources, continues. There is also a section of the maritime boundary off Tanjung Datu at the western end of the land boundary which is being disputed between the two countries.