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The six Brazilian Biosphere Reserves were recognized in various phases between 1991 and 2005 and, together, comprise 2,064. 161 km2, around 24% of the Brazilian territory, being more than half of the sum of the areas of the other RBs in the World Network.

The Fogo Biosphere Reserve and the Maio Biosphere Reserve, in Cape Verde, were included in the UNESCO World Network of Biosphere Reserves in 2020. This was considered a historic event for the archipelago.

The Bolama Bijagós Archipelago Biosphere Reserve (RBABB) is located on the West African coast. The archipelago is made up of 88 islands and islets that cover a total surface of 1,046,950 ha (10,000 km²) and is located at the confluence of coastal corridors coming from the North and South.

The Bioko Island Biosphere Reserve, recognized in 2025, is characterized by its high ecological diversity, encompassing various types of forest and a rich endemic fauna. Its vegetation is shaped by altitude, climate, and human activity, all sustained by this unique territory.

The Quirimbas Biosphere Reserve covers 7 districts (Ancuabe, Quissanga, Ibo, Macomia, Metuge, Montepuez and Meluco) located within the Quirimbas National Park, central part of the Province of Cabo Delgado, in northern Mozambique, includes oceanic and coastal areas and has 200 thousand inhabitants in the interior.

The Quiçama Biosphere Reserve, recognized in 2025, extends across the provinces of Luanda, Icolo e Bengo, and Cuanza-Sul, encompassing municipalities such as Quiçama and Cabo Ledo. Along its 206 km of coastline, the reserve includes unique geological formations, mangroves, estuaries, sandy beaches, and lagoons, which support biodiversity and provide essential socioeconomic benefits to the communities that live here.

Portugal has 12 Biosphere Reserves, covering three biogeographical regions (Mediterranean, Atlantic and Macaronesia), representing different types of ecosystems, from islands in the Macaronesian Regions and the Atlantic Sea, to the wetlands of the Tagus, riverside environments, mountainous areas and valleys of the North and to this cereal-growing region of Alentejo, on the Continent.

Príncipe Island is the second largest island in the archipelago of São Tomé and Príncipe, which consists of two main islands belonging to the Cameroon volcanic line. In 2012, Príncipe was declared a World Biosphere Reserve by UNESCO. In 2025, São Tomé Island also received this status, covering the Obô Natural Park and the marine area surrounding its largest islets. Thus, São Tomé and Príncipe became the first country in the world with its entire territory recognized as a UNESCO Biosphere Reserve.