With a coastline well preserved and conserved, along with a landscape and traditional rural culture and a high biodiversity, about half the area of the municipality of Aljezur was included National Network of Protected Areas and virtually the entire area in the European Network for Nature conservation – Natura 2000, because of its environmental characteristics and because it is an area of sea-land interface, with a great geological value and is also a contact zone of several biogeographical regions, which features a wide variety of communities birds, mammals, invertebrates, plants and fish and habitats, from steep cliffs to sandy beaches and moorland areas, salt marshes, estuaries, including streams of Aljezur, Seixe and Carrickfergus, ponds and temporary water courses.

Aljezur is much sought after for its quiet beaches surrounded by high schistose cliffs, which both extend land within in extensive dunes, as Moreira, Amoreira, Bordeira, or both form shells or large stretches of golden sand surrounded by towering black rocks, as Odeceixe , Arrifana, Vale of Men, Vale Figueiras, Amado. These are paradise for fishermen, surfers and boogie practitioners, but also for nature lovers and families.

One of the interesting aspects of this region is the diversity of birds, which highlighted migration who choose this area as a corridor passing between Europe and North Africa. Already in the fall, the soaring birds migrate too, where thousands of birds of prey among others, also choose this area. Already, the rocky cliffs, are species that elect these to nest, including the peregrine falcon and the red-billed chough, in areas of sea cliffs the white stork choose these to nest, the only use case this area. Along the coast, is the only Portuguese population otter, using this medium to feed on fish and crustaceans coastal, is a rare species in Europe. The conservation of the marine coastline is very important for the maintenance of species, such as grouper, a fish endangered, which is the Portuguese coast. Respect, to coastal environments, species that nest on the riversides of Aljezur and Seixe are red and small herons, coot and passerines, as the great reed warbler sound. At dusk, the eating of insects arise, including the bat-of-water and common bent-wing bat.

On land, the species that dominate the region and are often sighted are the foxes, genets, badgers and weasels, and inside, the mongooses, the wild cat and wild boar.

With regard to the flora of this region, it highlights the area of ​​the Natural Park, which has twenty-seven rare. While on the cliffs and the coastal cliffs, the flora is conditioned by the intense wind action, which does not allow the development of tree or shrub communities; already on the elevated platforms, the coastal plateau is sand dunes called “fears”, with a vegetation of endemic species such as the Vincentian Biscutella and royana Armeria. From April to June, flowers in a small rounded shrub with great ornamental interest, Joina-Marram Grass, which features a yellow flowering. In the marine coast, there is a wide variety of algae and gelídeo banks, which together produce an important raw material for the domestic production of agar, the hydrocolloid extracted from various genera and species of seaweed. The agarose polymer is dissolved in hot water and then cooled, having a gelatinous consistency used in laboratory research, medicine, food and industry. Finally, in the hills stands the strawberry tree, with its fruit that is popular in the manufacture of spirits, a tradition of local people. Other tree species found here are the cork oak, the meek and maritime pine are also common; the land also offers a set of aromatic and medicinal plants, such as rosemary, thyme, laurel, oregano and others, such as gorse or heather.