Guanahacabibes Biosphere Reserve contains never-ending beaches, jagged limestone pavements, marshland and mangrove swamps providing a natural habitat for about 600 species of plants, deers, jutias, bats, reptiles and any number of birds.

Four rivers run through the evergreen and semi-deciduous tropical forest of Sierra del Rosario Biosphere Reserve. Natural habitat to one of the world's smallest frogs and more than 115 bird species.

Peninsula de Zapata Biosphere Reserve contains the largest wetlands in the Caribbean with blue-water beaches, forests, rivers, lakes, flooded caverns. Natural habitat to the Cuban crocodile and 175 bird species.

Buenavista Biosphere Reserve protects nature ecosystems including mangroves, coral reefs, active dune zones, keys and natural reproductive zones for aquatic birds. Caves hold historically significant paintings.

Cuchillas del Toa Biosphere Reserve, is the best preserved mountainous natural ecosystem in the Caribbean. UNESCO declared it “one of the most biologically diverse tropical island sites on earth.”

Baconao Biosphere Reserve is natural home to 1,800 plant species and 939 indigenous species of wildlife including birds, butterflies, mammals, reptiles and the endangered hot-cave bat.