In the vastness of the Chubut coast, far from mass tourism, Arroyo Marea is hidden, a natural paradise where tides transform the landscape at every moment. Located within the Patagonia Azul Park, this corner of the province of Chubut is a sanctuary of biodiversity and an ideal destination for those seeking to connect with nature in its purest state.
Arroyo Marea is a territory where estuaries and salt marshes coexist in a delicate balance. According to biologist Lucas Beltramino, “estuaries are channels that, depending on the tides and rainfall, can fill with water or be left uncovered. Salt marshes, on the other hand, are swampy areas where sediment accumulates and resistant plants to high salinity grow.”
This dynamic generates a landscape in constant transformation. When the tide rises, the water covers the channels, creating a vast aquatic expanse. When it recedes, it exposes mud flats and saline vegetation, revealing a unique ecosystem where species adapted to extreme conditions coexist.

A refuge for wildlife
The natural richness of Arroyo Marea makes it a privileged habitat for various species. One of the protagonists of the ecosystem is the salicornia, a salt-resistant plant known as “sea asparagus,” which serves as food for guanacos and other herbivores.
Furthermore, this enclave is a strategic point for migratory birds. Among them, the red knot stands out, traveling thousands of kilometers from the Arctic and finding here a key area to rest and feed. “When the tide goes out, the exposed mud becomes a feast for these birds, which explore the substrate in search of small invertebrates,” explains Beltramino.
Experiences for adventurers
Visitors to Arroyo Marea can enjoy a variety of activities to immerse themselves in its natural environment. There are trekking trails that explore the area, offering privileged views of the coastal ecosystem. Birdwatching is one of the most fascinating experiences, with over 80 identified species in the region.
For those who wish to spend the night in this natural paradise, the wilderness camping of Arroyo Marea offers an authentic experience. It has camping areas, fire pits, dry toilets, and a sheltered refuge to take cover in case of bad weather.

A destination with history and endless skies
In addition to its ecological value, Arroyo Marea houses an important archaeological heritage. Studies have revealed traces of human settlements dating back 6,500 to 7,000 years, reinforcing the need to preserve this site not only for its biodiversity but also for its history.
When night falls, the spectacle continues in the sky. The absence of light pollution allows you to enjoy an unparalleled starry sky, making Arroyo Marea a perfect destination for astronomical observation.
Useful information for the visit
- Access is through the Portal Bahía Bustamante, on Provincial Route 1, 200 km from Comodoro Rivadavia.
- There are no stores in the area; the nearest one is in Camarones, 90 km from the campground.
- It is essential to bring appropriate clothing, comfortable shoes, drinking water, food, sunscreen, a hat, and sunglasses.
How to get to Arroyo Marea?
Arroyo Marea is a unique place, but the road that leads to it is equally special. In fact, if there is a journey that can take visitors’ breath away due to its natural beauty, it is Route No. 1 in Chubut, known as the Blue Route.
This route connects Rawson, Camarones, and Comodoro Rivadavia. Along the way, you pass through different towns that welcome visitors with incredible landscapes of unique charm, combining the sea, wildlife, and its diversity in this Patagonian corner. Located within the Patagonia Azul Park, the Blue Route has four public access portals, which allow you to enjoy nature with basic amenities for visitors: camping areas, fire pits, and toilets.
During the stretch between Parque Rocas Coloradas, north of Comodoro, and Puerto Viser, which is not yet fully enabled, you can also take National Route No. 3, heading north. This option opens to the east of Route 28 a few kilometers before reaching Garayalde. There, you must take a 32 km unpaved road in excellent conditions that leads to Route No. 1.
Arroyo Marea is a destination that surprises with each visit. Its landscapes in constant transformation, its diverse fauna, and its total immersion in nature make it an unmissable corner of Patagonia.
Source: Ambiente Chubut, Proyecto Patagonia Azul.
Cover photo: Chubutline.
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