|Coordinates||7°56′48″S 39°30′02″E / 7.94667°S 39.50056°ECoordinates: 7°56′48″S 39°30′02″E / 7.94667°S 39.50056°E|
|Ocean/sea sources||Indian Ocean|
|Max. width||18 km (11 mi)|
The Mafia Channel stretches in a roughly north/south direction between the Rufiji River estuary and Mafia Island. The deltas at the mouth of the Rufiji River extrude towards the island and water is forced through causing constant erosion of the deltas and the island itself. Small and narrow Bwejuu Island is located in the middle of the channel.