The Anjajavy Protected Area is protected to the north and west by three wide, separate mangroves and their winding tidal channels. These wetland ecosystems are an example of the vital service nature provides to human beings on a global scale. The mangrove rivers flanking the Anjajavy Forest form excellent natural borders to the Protected Area and convenient transportation routes to visit. The mangroves of Anjajavy comprise a great number of species of trees and shrubs adapted to salty water. One of them, the Jajavy ("Salvador angustifolia") has given its name to the village. The root entanglement forming stilts or buttresses, the thick mud and the daily tidal action forms an excellent haven, nursery and larder for terrestrial and aquatic fauna. Hundreds of species of fish, shellfish, insects and birds depend on this habitat for food and shelter. In Anjajavy, the mangrove swamps protect the natural Reserve of dry deciduous forest as well as the Marine Reserve. This biotope simultaneously serves as a curtain of protection against strong and salty winds, a fire-wall, a damp buffer useful to the forest during the dry season and as filter against the turbidity of the coastal waters. The two rivers of mangroves on both sides of the Anjajavy forest constitute excellent natural borders for the Protected Area as well as practical transportation routes which allow for better exploration. In general, the mangroves also provide human beings with vital services; the pneumatophore roots help to stabilise the soft soils and to protect the coast line against erosion and natural catastrophes. On a global scale, these habitats capture carbon in their sediments, where it can remain for centuries. The mangroves are therefore one of the most efficient natural carbon sinks in the world, with rates or carbon sequestration up to 50 times greater than those of tropical forests. The phytoplankton and plankton of the mud constitute the point of origin of food supply chains which provide to the precious fish needed for the second economic source of Anjajavy: the traditional fishing industry.