Iroise Sea

The Iroise Sea is a marginal sea between the Île de Sein and Ushant islands, featuring rocky outcrops and deep underwater channels along the Brittany coast. Strong currents and rough waters characterize this region, making it challenging for navigation.

The name first appeared in the Neptune Francois maritime atlas of 1693, referring to a specific navigation passage through these waters. This historical naming reflects the region's importance as a shipping route for trade.

Fishing communities along the coast practice traditional maritime trades that have shaped daily life for generations. Ports like Le Conquet show how deeply rooted local culture remains tied to the sea.

Visitors should know that currents here are very strong, requiring experienced and cautious sailing. Winter storms are frequent and dangerous, so it is better to explore these waters during warmer months.

The marine park contains an remarkable concentration of seaweed species, with around 300 different varieties thriving in the nutrient-rich waters. This biological diversity makes it an important location for marine researchers and nature enthusiasts.

Location: Brittany

Part of: North Atlantic Ocean, Celtic Sea

GPS coordinates: 48.25000,-4.91667

Latest update: December 17, 2025 10:19