Abandoned fishing nets present a serious problem for the ecology of the lake, entangling manatees and other freshwater species, creating navigation hazards, and destroying the natural habitat. Cameroon snapshot 9 communities participating in Net-Works 2,396 kg of nets collected so far for recycling
Ang Lake Ossa Wildlife Reserve sa Lower Sanaga River ay tirahan ng mga endangered na West African manatee at freshwater turtle, at itinuturing ito bilang isa sa Mahahalagang Lugar ng Biodiversity batay sa bilang ng endangered species.