France · Marseille, the Calanques and Côte Bleue
Impérial du Milieu is one of three rocky outcrops in the Riou Archipelago near Marseille, positioned between the other two rocks of the Impériaux. The site features a scenic canyon between Impérial du Large and Impérial du Milieu, along with a notable drop-off along the west face of the rock.
Community notes to help plan your visit.
Aquatic Life
Common sightings include grouper and schools of anchovies, along with anthias.
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Boat-access Marseille rock dive with arches and red gorgonians.

Riou grotto site near Marseille with a lit cave and deeper dropoff.

Boat-access Marseille cave with coral, lobsters, and eels.