Ecosysiem services are the benefils people obtain from ecosystems. However, this large-scale exploitation has resulted in a 75% decline in demersal2 fish resources since 1982 (Gascuel et al., The identification of ecological corridors between MPAs, and the pooling of countries' conservation efforts, resulted in the establishment of a regional network of MPAs in West Africa in 2007. Today the network includes 23 MPAs.