Seine Maritime

Seine-Maritime is an administrative region in northern France with a coastline along the North Atlantic. Diver activity here centers on coastal patches in the English Channel and offshore waters, including popular access from nearby ports. The region’s mix of estuarine and shelf environments supports shallow to moderately deep sites along chalk and granite outcrops, with seasonal visibility and water temperatures typical of northern France. Inland, the Seine’s estuaries and linked freshwater systems influence local habitats, though most diving occurs near the coast and in nearby tidal areas. Notable hubs include coastal towns and access points that serve as bases for shore dives and boat trips to nearby dive zones. Marine life includes common temperate species such as bass, wrasse, lobsters, and various nudibranchs, with historical wrecks and coastal formations offering diverse dive experiences for recreational divers.