Schematic of the ITF. Values of the average flow and the major passages are indicated by red. Water enters the ITF from the western Pacific and exits into the Indian Ocean.
The Indonesian Throughflow (ITF; Indonesian: Arus Lintas Indonesia) is an ocean current with importance for global climate as is the low-latitude movement of warm, relative freshwater from the north Pacific to the Indian Ocean. It thus serves as a main upper branch of the global heat/salt conveyor belt.