The Río Paraná in the Corrientes region of Argentina is South America's second-longest river, stretching 4,880 km through Brazil, Paraguay, and Argentina. Its name derives from the Guaraní language, meaning "relative of the sea" or "water that mixes with the sea." In the Corrientes section, the river flows through a subtropical environment characterized by dense riparian vegetation, side channels, sandbars, sunken logs, and boulder gardens, giving it a structure-rich character that rewards exploratory paddling.

Kayaking on this stretch is well-suited to paddlers of varying experience levels. Guided excursions using sit-on-top kayaks are available in durations of one, two, or three hours, and the activity is appropriate for a wide range of ages and abilities. The deep green of the surrounding vegetation and the relative quiet of the region are defining features of the paddling experience. Beyond the main channel, paddlers can explore the side channels of the Selva Paranaense, a biome of considerable ecological richness.

Wildlife encounters are a notable aspect of paddling here. The broader Paraná ecosystem supports over 1,500 mammal species, more than 500 bird species, over 300 fish species, 250 tree species, and 85 orchid species. Reptiles commonly observed include lagoon turtles and painted turtles. Fish species present in the river include tarpon, catfish, boga, and tararira (wolf fish), as well as the golden dorado, a large and powerful species that is the focus of a dedicated fly-fishing season running from approximately late June through early November.

The river's structure — sandbars, bays, submerged wood, and channel edges — creates varied paddling terrain. Drift paddling along these features allows close observation of the natural habitat. The city of Corrientes also offers access to the river for stand-up paddleboarding and kayaking directly from its riverfront.

Guided tours with bilingual guides are available through operators in the region, providing an organized option for those unfamiliar with the waterway.