Bahía Almirante Brown, more commonly known as Bahía Brown, is a significant saltwater bay located on the northern shore of the Beagle Channel, on the southern coast of the Isla Grande de Tierra del Fuego within the Ushuaia department. This picturesque bay is a center for marine activity, known for its artisanal fishing and burgeoning mariculture projects, particularly mussel farming. The small fishing village of Puerto Almanza sits on its northwestern shore, adding to the area's authentic maritime character. The bay's waters are influenced by the cold, nutrient-rich currents of the Beagle Channel, creating a dynamic environment for both commercial and recreational fishing.