East Niger Mouth
The eastern Niger mouth opens into the Bight of Biafra, where the Guinea coast turns eastward from the delta toward Cape Lopez. Distributaries of the Niger meet the sea beside the outlets of the Cross, Calabar and Cameroonian rivers. Fresh water, mud and sediment create shifting channels, mangrove creeks and shallow approaches. Offshore islands offered landfalls and sheltered water along a coast where river mouths were difficult to enter.
The bight became one of Atlantic Africa’s major commercial passages. Its markets drew people from the Igbo, Ibibio, Efik, Bamileke and many neighboring societies into long-distance trade. During the seventeenth and eighteenth centuries, Elem Kalabari, Old Calabar and Bonny controlled most of the region’s slave trade; Bonny became the leading port by the middle of the eighteenth century. European ships exchanged cloth, metal goods and other imports for captives brought through inland and coastal networks.
After Britain prohibited its subjects from carrying enslaved people in 1807, Royal Navy patrols tried to suppress ships of several nations. That campaign changed the maritime traffic without ending the commerce at once. The river mouths therefore remained places of exchange, naval pressure and competing authority, where local traders and rulers negotiated with foreign captains across a difficult delta.