West African Manatee's occur within the bolon and were previously hunted for meat. Habitat Type - Mangroves Mangroves can be defined as a tropical swamp forest growing in salt or brackish water. Mangroves are usually found in the tidal zone in sheltered places such as estuaries and coastal lagoons. In the coastal area the mangroves are comparatively low, but upriver they usually consist of trees 15-20km high. Those species that make up the mangrove forests need special adaptations to be able to grown on an unstable soil that the tide threatens to wash away and to be able to survive the constant changes in water level and salinity.
Mangroves are extremely important in preventing erosion.
They also have been utilised by certain nationally rare eg. Avi-Fauna Niumi National Park is home to a large diversity of resident bird species and also is an important site for European Migrants. A bird ringing programme has been in operation on Jinack Island since 1994 and has added numerous new species to the parks bird list. The warblers are difficult to distinguish in the field due to their subtle plumage characteristics and generally skulking behaviour. The shallow offshore waters provide excellent feeding conditions for terns, gulls and other piscivorous species.