Get back to nature in the barrier islands of Ria Formosa Natural Park and discover a unique lagoon system that constantly changes according to the movement of the winds. Experience the natural beauty of the Algarve away from the tourist resorts and marvel at the area's amazing biodiversity. See birds nests and learn about the mollusks and crustaceans that provide revenue for the local seafood producers. Climb aboard a boat in Olhão for a 4-hour trip to observe the flora and fauna of the barrier islands from the water.  Stop at one of the islands to take a relaxing stroll on the golden sands and see the typical fishing villages of the area. Get the chance to visit the market in Olhão before or after your boat trip, and marvel at the wide variety of fresh seafood on sale, including clams, oysters and more. Lunch on the islands can be arranged (not included in the tour price). Enjoy free time to swim and relax before your return.