Islote Lobos National Park

The Islote Lobos National Park in Argentina is a destination of indescribable natural beauty that allows a unique connection with nature. Its fascinating biodiversity, the observation of sea lions and penguins, its mighty sea views, and the opportunity to witness a lot of wildlife make it an unmissable place for nature and adventure enthusiasts. Here, visitors can experience pristine beauty and enjoy unforgettable moments surrounded by the natural abundance that this place offers.

National Park Information

Islote Lobos National Park

Location and Size

The Islote Lobos National Park is situated on the Atlantic coast of Río Negro Province in Argentinian Patagonia. It is located on the San Matías Gulf, approximately 50 km from the town of Sierra Grande, in the San Antonio department. The park consists of six rocky promontories near the coast: Lobos, La Pastosa, Ortiz Norte, Ortiz Sur, Redondo, and de los Pájaros, covering an area of 2,400 hectares.

In terms of vegetation, the park’s terrestrial area falls within the plains and plateaus shrubland ecoregion. Since 1977, the area has been protected at the provincial level, and on July 30, 2020, the project to convert it into a national park was announced. Its geographical coordinates are: 41°24′S 65°00′W / -41.4, -65.

History of Islote Lobos National Park

Islote Lobos National Park was established on June 16, 2022, under the Spanish name "Parque Nacional Islote Lobos", with the primary objective of protecting and preserving the biological diversity and natural habitat of marine species.

Initially, the Islote Lobos Complex was designated as a Protected Natural Area in 1977 under the administration of the Government of Río Negro. The main goal of this designation was to preserve the species that choose the area as a breeding ground, as they represent a valuable natural asset with significant scientific, economic, and aesthetic importance.

In 2020, the Legislature of Río Negro approved Provincial Law 22.351, which allowed the transfer of the lands of the Protected Natural Area to the National Government. This led to the creation of the second National Park in the Río Negro Province, following the Nahuel Huapi National Park in Bariloche. This new National Park was officially established this year through National Law 27.670. Under this law, the National Government committed to preserving the extraordinary natural beauty, native flora and fauna of the park, for the benefit of present and future generations, promoting scientific research, education, and the enjoyment of nature. Additionally, the focus is on conserving the cultural, archaeological, and paleontological heritage, preventing its loss and deterioration.

The significance of Islote Lobos extends beyond its natural beauty. It is a site of historical and ecological importance, hosting unparalleled biodiversity and playing a vital role in the conservation of marine species.

Climate of Islote de Lobos

The province of Río Negro and the Islote de Lobos National Park within it are situated in a climatic transition zone between the characteristic cold of most of Patagonia and a milder climate north of the Colorado River. Precipitation varies considerably in the region, being abundant in the mountainous area and scarce on the Patagonian plateau. This variation becomes evident when looking at rainfall records in different areas: for instance, on Isla Victoria, around 1,700 mm of rain is recorded annually, whereas at the Bariloche Aerodrome just 35 kilometers to the east, the figure drops to less than 800 mm. On the other hand, in the town of Maquinchao, approximately 220 kilometers to the east, annual precipitation barely reaches 200 mm.

In the province of Río Negro, there is also a transition between areas with higher summer rainfall in the north and those with greater rainfall during the months from April to August, as is the case in some areas of Patagonia. During winter, snowfall is common throughout the province, except in the coastal area where this phenomenon is occasional. Average temperatures in January, except in the mountain region, range between 20 and 24°C, while in the Andean region, this figure drops to around 15°C, depending on the altitude.

The strong winds characteristic of the entire Patagonia are also present in Río Negro. These winds contribute significantly to the aridity of the region, as they promote evaporation in areas with low precipitation. Additionally, they provide distinct characteristics to the flora, which has developed adaptations to withstand the impact of the prevailing winds, primarily from the west, southwest, and northwest. The highest number of cloudy days is recorded in the mountainous area, representing between 50% and 60% of the days, while on the coastal side, this percentage decreases to approximately 40%. In the central part of the province, the percentage of sunny days is even higher than on the coast.

Biodiversity: Seabirds, Mammals, and Flora

Location Map of Islote Lobos National Park


The ecosystem of Islote Lobos National Park is composed of six small rocky islets: La Pastosa, De los Pájaros, Redondo, Ortiz Norte, Ortiz Sur, and Lobos. The Lobos islet, being the most northern, consists exclusively of vegetation-free rocks, while the others are covered by more recent sedimentary materials such as sand, shell fragments, and guano. Each islet provides a unique habitat for a variety of marine life and coastal birds, contributing to the park’s diversity and the preservation of these ecosystems.
During low tide, the islets connect to the mainland through tombolos, which are sedimentary and rocky bars. This reveals extensive rocky and sandy intertidal areas, as well as tidal pools and isolated rocks.

The area also features coastal lagoons known as "albúferas," which are saltwater lagoons separated from the sea by sandbars and sediments, but with partial communication to the sea. These features add a unique charm to the park area.

Seabird Species

It is home to a great variety of seabirds and coastal birds that use the islets and intertidal zone for nesting, resting, and feeding in marine environments. Among these species are threatened birds such as the giant petrel, the southern flamingo, the southern two-banded plover, and the red knot, among others.
Due to the importance of this area for bird conservation, Islote Lobos National Park has been declared an Important Bird and Biodiversity Area (IBA) by Birdlife International / Aves Argentinas (Spanish text).

The diversity of birds is favored by the presence of a rich invertebrate fauna in the complex, including isopods, amphipods, and polychaetes, which form the food base for many of these birds.

Seals and Other Mammal Species

The park is home to a large number of seals, which are the main attraction for visitors along with the penguins. Additionally, there is a diversity of other marine species that reside on the island.

Despite its focus on marine life, which is perhaps the prime draw for visiting the park, the protected area of Islote Lobos also hosts a variety of terrestrial species that add to its biodiversity richness. It provides protection to a colony of South American sea lions (Otaria flavescens) and a colony of Magellanic penguins (Spheniscus magellanicus), with the latter being the northernmost colony of the species in the world. Moreover, the park comprehensively safeguards the wetland present in the area.

In the plain and plateau areas, farther from the tidal line, other mammals can be found, such as guanacos, pampean foxes, wild boars, hairy armadillos, cavies, skunks, and terrestrial turtles. These terrestrial animals inhabit the vicinity of the park and can venture into areas near the Islote Lobos Complex in search of food and shelter.


On the islets of Islote Lobos National Park, except for Lobos islet, there is tall and dense shrub vegetation. Predominant species include jume (Suaeda divaricata), zampas (Atriplex spp.), jarilla (Larrea spp.), yaoyín (Lycium chilense), palo azul (Cyclolepis genistoides), and Stipa tenuis grasslands.

In the lower stratum of the terrestrial sector, there are floral elements characteristic of the Patagonian region. This includes genera like Salix, Monttea, Condalia, and Prosopidastrum, among others. Additionally, there’s a presence of sclerophyllous grasses adapted to prolonged periods of drought and heat.

In the marine area of the park, macroalgae from the groups of green algae (Chlorophyta), red algae (Rodophyta), and brown algae (Phaeophyta) can be found. These algae contribute to marine biodiversity and play an important role in coastal ecosystems.

Geological and Geographic Aspects

Island Geology

The geology of Islote Lobos is fascinating, with a variety of rock formations that showcase the geological history of the region.

Geographic and Topographic Features

The park boasts a range of unique geographic and topographic features, from rocky coasts to a variety of terrestrial landscapes.

Tourist Attractions and Activities

Excursions and Wildlife Observation

Park excursions provide opportunities for wildlife observation, allowing visitors to get up close to seals, seabirds, and other animals.

Photography and Birdwatching

The park is a paradise for photography and birdwatching enthusiasts, offering opportunities to capture incredible photos and observe rare bird species.

Rules and Recommendations for Visits

To ensure a safe and enjoyable visit, visitors must follow the park’s rules and recommendations, which include respecting wildlife and the natural environment.

Research and Conservation of the Park

Species Conservation Programs

The park hosts conservation programs aimed at protecting and preserving the diversity of species that inhabit the island.

Current Scientific Research

The park is an important site for scientific research, where scientists conduct studies on the species and the island’s natural environment.

Access and Accommodation in Islote Lobos National Park

How to Get to the National Park

There are several ways to reach Islote Lobos National Park, including boat trips and guided tours.

Accommodation and Services Options

There are a variety of accommodation options near the park, along with services and amenities for visitors.

Photo Gallery