Ndumbé Lobé Bell or King Bell was a leader of the Duala people in what is now the southern part of Cameroon during the period when the Germans established their colony of Kamerun. He was an astute politician and a highly successful businessman.

The Wouri estuary, or Cameroon estuary is a large tidal estuary in Cameroon where several rivers come together, emptying into the Bight of Biafra. Douala, the largest city in Cameroon, is at the mouth of the Wouri River where it enters the estuary. The estuary contains extensive mangrove forests, which are being damaged by pollution and population pressures.