Islote Lobos National Park, National park on the Atlantic coast of Río Negro, Argentina

Islote Lobos National Park is a marine reserve on the Atlantic coast of Río Negro province in Argentina, made up of six small rocky islets. The islets consist of cliffs and flat rock surfaces where sea lions, Magellanic penguins, and several seabird species gather to breed and rest throughout the year.

The area was first placed under protection in 1977 to preserve its marine wildlife and bird colonies. In 2022, it was upgraded to national park status, giving it stronger legal protection under Argentine federal law.

The name "Lobos" comes from the South American sea lions (lobos marinos de un pelo) that form a breeding colony on these rocks. The islets are not open to walking, so visitors watch the animals from boats offshore, where they rest on the rock surfaces or slide into the water.

The islets cannot be walked on, so the visit happens entirely from a boat tour departing from Sierra Grande. Wind and waves can change quickly along this stretch of coast, so it is worth bringing warm layers and checking sea conditions before heading out.

The Magellanic penguin colony here is described in sources as possibly the northernmost on the Argentine maritime coast, not the world. The islet Lobos itself has no vegetation at all, while the other five islets carry salt-adapted glasswort and espartillo.