⚠️ Timetables, opening hours, prices and access conditions may change without notice, for reasons beyond our control (season, weather, decisions by operators, venues or local authorities). Before every trip, check the information with the relevant authorities and service providers.
1 hr 30 to 2 hrs on foot: the 1847 lighthouse, Napoleon III's fort, Château Renault, the Blainvillais hamlet and Port-Marie beach, lifeguarded in summer.
With a tidal range of up to 14 m, the archipelago grows from about 50 islets to 365 at low tide. Cockles, clams and prawns: size and quantity limits apply.
Plongée Chausey Loisirs runs trips to the archipelago for snorkelling (grey seals and bottlenose dolphins possible, never guaranteed), sea kayaking and try dives.
A replica of a Granville fishing boat, the bisquine sails from 1 April to 15 October to the Bay of Mont-Saint-Michel and the Chausey archipelago.