The Bay of the Somme, one of the most beautiful natural sites in France

The Bay of the Somme, a vast estuary covering an area of over 70km², is a natural area in a class of its own, and one of the few Grands Sites de France. This spectacular bay was formed at the point where the Somme meets the English Channel, on the Picardy coastline. While carrying huge quantities of sediment, fresh and salt water mix here to the rhythm of the daily tides. At high tide, seals sometimes play not far from the beach, but when the sea recedes, you can hardly tell the difference between the sandy foreshore as far as the eye can see, the sky and the sea... These dramatic variations in scenery with the tidal coefficients, coupled with an ecosystem as rich as it is fragile, are what make the Bay of the Somme such a fascinating place to discover.

Seals, amazing inhabitants of the Bay of the Somme

- © Philippe PATERNOLLI / Shutterstock

The Bay of the Somme, a fragile and fascinating ecosystem

The Somme rises at Fonsomme, far inland in the Aisne département. As it criss-crosses the Hauts-de-France region and absorbs its tributaries, the Somme increases in flow, becoming a river that flows through the countryside of its namesake département, before ending its course directly in the sea.

Aerial view of the Bay of the Somme

- © Francois BOIZOT / Shutterstock

As it does so, its waters drain large quantities of sediment along the way, which is gradually deposited in its estuary. This is where the Somme meets the opposing currents of the English Channel, creating a vast 70km² bay with a muddy, sandy bottom. The tides are responsible for shaping this unique landscape, coming and going constantly, twice a day: a finely-tuned metronome.

Silting up threatens the ports of Le Crotoy and Saint-Valery, which may one day share the fate of Rue: this small village, set back in the marshes, was a prosperous port overlooking the bay in the Middle Ages!

The mollières, salt meadows of the Baie de Somme

- © texianlive / Shutterstock

The two areas of the Bay of the Somme

There are two distinct areas in the Baie de Somme. The slikke, which the sea covers every day at every tide, is the vast area of mudflats and wet sand at the heart of the bay: it is possible to venture out there when the sea recedes into the distance. On the other hand, the mollières, the local name for schorre, are large stretches of salt meadows that the sea only manages to cover at high tide.

Seals rest on a sandbank at low tide

- © bensliman hassan / Shutterstock

These two environments are the source of a rich ecosystem, shaped by both nature and man. The mudflats are home to countless shellfish and the brackish waters of the bay are a nursery for fry. All of which makes a delicious larder for the hundreds of species of birds, both sedentary and migratory, that live in the Bay of the Somme, as well as for one of its most emblematic animals, the seal!

The inhabitants of the Bay of the Somme are specialists in fishing and gathering on foot, in search of henons (cockles) or samphire. They have also made the most of the mollières, home to the Hensons, the local breed of horse, long-haired Highland cows and flocks of sheep: the Bay of the Somme salt meadow lamb has been awarded an AOC (protected designation of origin)!

Exploring the Bay of the Somme, a wealth of experiences to be had

The Bay of the Somme is just as fascinating under a beautiful summer sun as it is under a heavy grey winter sky, on a bright autumn day or a rainy spring day.

Thanks to the tides, the scenery is constantly changing: it's impossible to get bored of this palette of colours, a cameo of blues and greys, evolving hour by hour with the movements of the sea... Many artists have found inspiration in the Baie de Somme, including Alfred Sisley, Philippe Toulouse-Lautrec, Edgar Degas, Eugène Boudin, Jules Verne, Victor Hugo and Colette.

The mudflats of the Bay of the Somme at low tide

- © shocky / Shutterstock

Today, there are many ways to explore the Bay of the Somme. On foot, local guides will take you through the mudflats and sandy stretches uncovered at low tide, to observe the birds and especially the seals, the real stars of the region.

By bike, which you can take with you on the train, on the roof of your car, or hire locally, you can take advantage of the region's excellent network of cycle paths, such as the complete bypass of the Bay of the Somme from the Pointe du Hourdel to Le Crotoy, or other easily accessible loops for exploring the hinterland (Héron circuit, Avocette circuit, etc.).

© Philippe PATERNOLLI / Shutterstock

You can also swap your two-wheeler for a four-legged ride: horse-riding trips are organised in the Bay of the Somme, giving you the chance to ride the local mascot, the Henson!

When the tide comes in, the Baie de Somme can also be explored by sea. A number of excursion boats offer outings, while kayak hire companies, for individual or accompanied trips, are present in both Le Crotoy and Saint-Valery. So there's plenty to do in the Baie de Somme!

When should you visit the Bay of the Somme?

All year round. High tide periods are even more spectacular: get your calendars ready!

⭐ Where to stay in the Baie de Somme?

To stay as close as possible to the bay, you can choose between Saint-Valery-sur-Somme to the south, and Le Crotoy to the north, with a good choice of hotels, gîtes, rentals and campsites.

👉 Safety in the Baie de Somme

Don't set off across the Baie de Somme without a guide: you'll sink deep into some mudflats, and the tide rises quickly on this flat terrain. Be careful, accidents are common.

👉 The Maison de la Baie de Somme

On the road between Saint-Valery and Le Hourdel, the Maison de la Baie de Somme is a well-designed interpretation centre for understanding how this fragile ecosystem works from a global perspective. Many activities are also on offer in the Baie de Somme, including guided outings to observe the local wildlife.

by Editorial Team
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