Écomusée de l'île de Groix, Ecomuseum in Port Tudy, Groix, France

The Écomusée de l'île de Groix occupies a former tuna canning factory at the end of the harbor quay, displaying boats, models, drawings, paintings, and traditional fishing equipment. The exhibits document the maritime history and working life of the island.

The museum was founded in 1984 after the municipality acquired the former Romieux tuna canning factory, preserving an important industrial site. Its creation marked recognition of Groix's role as France's leading tuna fishing port.

The museum's friends' association, La Mouette, publishes Les Cahiers de l'Île de Groix, sold in the museum bookshop. The SAMG also issues Hatoup, named after the island motto meaning "all sails out", with a digital letter and video testimonies. Workshops for children and adults and outings on a traditional fishing sailboat accompany the displays.

The museum sits in a former cannery building facing Port Tudy, so the exhibition halls are reached on foot from the ferry landing along the quay. Inside, black display panels with white text and photographs line the left side of the hall, while glass cases and a white partition divide the space further back. Workshops for children and adults are offered, and outings take place on a traditional fishing sailboat.

The museum holds a scale reproduction of the hull of a ship chartered for tuna fishing, displayed alongside two actual boats and shipbuilding tools. Tuna fishing shaped Groix from 1850 to 1940, and photographs in the fishing section record that period.