Indonesia–Philippines border
The border between Indonesia and the Philippines consists of a maritime boundary mainly on the Celebes Sea that separates the two Southeast Asian countries as defined through a pact that was signed by both parties in 2014. The border is also the Exclusive Economic Zone (EEZ) boundary between Indonesia and the Philippines, which is delimited through eight geographic coordinate points.
Source: Wikipedia — Indonesia–Philippines border (CC BY-SA 4.0)