Bahía Engaño is a coastal bay in Chubut, Argentina, adjacent to the provincial capital of Rawson. It is a marine environment where the waters of the Río Chubut meet the sea. The primary access point for watercraft is the port in Rawson, located precisely at the river's mouth. This area is a hub for commercial and tourist boat traffic, including dolphin-watching excursions targeting the distinctive black and white Commerson's dolphins, locally known as "toninas." Paddlers should expect significant vessel activity here, necessitating caution and awareness when launching or crossing the marked channel. The bay's character is defined by its Patagonian setting, with exposed coastlines subject to the region's strong winds. The fetch across the open bay can generate substantial chop, making wind conditions a primary safety consideration. The intertidal zone features rocky shores and shallow rock pools, indicating a tidal range that exposes these areas at low water. Paddling close to shore may involve navigating around these rocky features. The Centro Aquavida, an interpretation center on the costanera, provides detailed information on the bay's marine biodiversity, which includes various macroalgae species studied for their response to solar radiation in this high-UV environment. The surrounding beaches, such as El Faro and Santa Isabel to the south, offer basic infrastructure but are more exposed. Water temperatures are characteristic of the cold South Atlantic, and the area is part of the broader Reserva de Biósfera Península Valdés region, underscoring its ecological significance.