Lakes around Costa feature a diverse landscape of coastal wetlands, lagoons, and natural areas, particularly in the Huelva region. These areas are characterized by their rich biodiversity and ecological significance, often serving as important habitats for migratory birds. The region's geography includes estuaries formed by rivers and the Atlantic Ocean, creating unique marsh ecosystems. These natural settings provide opportunities for outdoor activities and wildlife observation.
Last updated: June 26, 2026
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This natural area covers approximately 7,185 hectares and is known for its rich biodiversity and its importance as a breeding area and refuge for numerous bird species. Notable species include the Eurasian spoonbill, the flamingo, various ducks, grey and purple herons, and birds of prey such as the osprey. The area also has an interpretation center, birdwatching points, trails, and rest areas.
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Flamingos are characterized by their long neck, hooked beak and pink plumage. The family has six species
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In 1984, an artificial island was constructed in the swamp area, partly to improve bird life. More than 6,000 flamingos now reside in the Odiel marshes, making it the second largest colony in Spain.
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The Odiel marshes are a Unesco biosphere reserve and a natural area located at the mouth of the Odiel river. These wetlands originated from the sedimentary processes coming from the mouth of the Tinto and Odiel rivers together with the dynamics of contributions from the Atlantic Ocean, which gradually formed a large estuary, making the area one of the most important tidal areas in Andalusia. .
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A freshwater lagoon, which preserves a high population of waterfowl and is one of the fundamental wetlands for the survival of birds that migrate to the Peninsula. The lagoon is surrounded by castanets, cattails and reeds.
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It is a natural area (wetland) located at the mouth of the Odiel river or Huelva estuary. It constitutes one of the largest extensions of marshes in Spain. There are several trails and bike routes that allow you to observe nature (for example, the flamingo, the spoonbill, the heron and the osprey).
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Protected under the figure of the Natura 2000 Network, this unique and special place is an estuary and biosphere reserve located at the mouth of the Ría de Huelva. Its diversity in flora and fauna as well as the great ecological richness of this place make it a unique site worth visiting for all. In addition, its landscape environment makes it a panoramic window towards the interior and the Huelva beaches.
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The El Portil lagoon constitutes one of the most representative Huelva coastal wetlands and is in the best state of conservation, housing a community of fish of great interest. It is a practically circular route around the Laguna del Portil. It begins at the viewpoint located next to the coastal road HV-4112 from where it penetrates into the pine forest that surrounds the lagoon.
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The region around Costa is characterized by diverse coastal wetlands, lagoons, and marshlands. You can explore significant natural areas like the Odiel Marshes, a UNESCO biosphere reserve, and the El Portil Lagoon, a well-preserved freshwater wetland.
Yes, the lakes and wetlands around Costa are exceptional for birdwatching. The Odiel Marshes are home to over 6,000 flamingos, making it the second-largest colony in Spain, alongside Eurasian spoonbills, various ducks, herons, and birds of prey like the osprey. El Portil Lagoon also preserves a high population of waterfowl and is fundamental for migratory birds.
Many of the natural areas are family-friendly. The Odiel Marshes and El Portil Lagoon offer trails suitable for families. Additionally, Zafra Park is a family-friendly spot with facilities, and Flamingos viewing points are popular with all ages.
Yes, there are several hiking opportunities. For easy walks, you can explore routes like the circular path around El Portil Lagoon. Other easy hikes in the region include 'Isla Cristina' and 'Huelva City and Zafra Park Loop'. You can find more details on these routes in the Easy hikes around Costa guide.
Absolutely. The region offers various cycling routes, including moderate options like the 'Punta Umbría and Enebrales Coastal Loop' and the 'Marismas del Odiel and El Portil Loop'. An easy option is the 'Odiel Marshes Greenway'. For more cycling adventures, check out the Cycling around Costa guide.
The Marshes and salt pans of Isla Cristina are a natural area offering viewpoints with information about the longstanding tradition of sea salt harvesting in the wetlands and lagoons. It provides insight into the historical and ecological importance of these unique landscapes.
The Odiel Marshes are a UNESCO biosphere reserve and a natural monument, formed by the confluence of the Tinto and Odiel rivers with the Atlantic Ocean. It's one of the most important tidal areas in Andalusia, known for its rich biodiversity, especially its large flamingo colony, and serves as a crucial breeding ground and refuge for numerous bird species.
Yes, there are gravel biking routes that allow you to explore the natural beauty of the area. Moderate trails include 'The marshes are rich in birdlife. – Guadiana River loop from Islantilla' and 'Odiel Marshes – Puerto de Ayamonte loop from Islantilla'. You can discover more options in the Gravel biking around Costa guide.
The wetlands and lagoons are teeming with wildlife, particularly birds. You can spot thousands of flamingos, Eurasian spoonbills, various ducks, grey and purple herons, and birds of prey like ospreys. The rich ecosystems provide habitats for a diverse range of species.
Yes, there is a practically circular route around the El Portil Lagoon. It starts at a viewpoint next to the coastal road HV-4112 and takes you through the pine forest surrounding the lagoon, offering beautiful views of this freshwater wetland.
While specific seasonal data isn't provided, wetlands and marsh areas like the Odiel Marshes are particularly important for migratory birds. Therefore, spring and autumn are generally excellent times to visit for birdwatching, as you'll witness the arrival and departure of various species.
The Odiel Marshes feature an interpretation center, birdwatching points, trails, and rest areas for visitors. Zafra Park also offers facilities, providing convenient spots for a break during your exploration.


Still not found your perfect lake around Costa? Check out the guides of these regions to see even more beautiful places.