The Bight of Benin, or Bay of Benin, is a bight in the Gulf of Guinea area on the western African coast that derives its name from the historical Kingdom of Benin. The Bight of Benin was named after the Kingdom of Benin. It extends eastward for about 640 kilometres from Cape St. Paul to the Nun outlet of the Niger River, which marks the westernmost poin…The Bight of Benin, or Bay of Benin, is a bight in the Gulf of Guinea area on the western African coast that derives its name from the historical Kingdom of Benin. The Bight of Benin was named after the Kingdom of Benin. It extends eastward for about 640 kilometres from Cape St. Paul to the Nun outlet of the Niger River, which marks the westernmost point of the Bight of Biafra.