The Niger Delta is a vast flood plain endowed with forests and wetlands that are built up by the accumulation of secondary deposits washed down by the Niger and Benue Rivers. The area is composed of four (4) ecological zones. These are:
· The Coastal barrier islands: The coastal barrier island forests are the smallest of the ecological zones in the Niger Delta. They are largely intact and have high concentration of biodiversity.
· The mangroves: The mangrove forest of Nigeria is the third (3rd) largest in the world and the largest in Africa. Over 60% of this mangrove is found in the Niger Delta.
· The fresh water swamp forests: These are considerably large forests that succeed the mangroves and continue in low lying places along water ways inland in the forest zone.
· Low-land rain forest: Although vegetation untouched by human activity probably no longer exists in Nigeria, logging and agricultural encroachment are degrading the forest zone (Ibeakuzie, 2001).