The Sado estuary is the natural habitat of the Bottlenose dolphins (Roazes in Portuguese). Welcomed by the population who feeds and protects them, these marine mammals are especially sociable. They can be observed along the coast of Arrábida all year long. This activity is carried out between Setúbal, Troia and Serra da Arrábida. Swim from the boat supported by the specialized guide on board for unforgettable encounters with the dolphins. They will also teach you about the marine environment and the biodiversity all around you. As you go they will comment on the geology and points of local archaeological importance.