Lakes around Le Crotoy are primarily characterized by the vast estuarine system of the Bay of Somme, a UNESCO-designated Grand Site de France. This region features extensive wetlands, marshes, and coastal lagoons, offering rich biodiversity. The area is a crucial stopover point for migratory birds and home to a significant seal colony. These diverse water bodies provide unique natural experiences within the Parc Naturel Régional Baie De Somme Picardie Maritime.
Last updated: June 23, 2026
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The bay of summer, on our trip it was low tide.
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Magnificent view of the Bay of Somme at the port of Saint-Valery-sur-Somme. The largest French colony of harbor seals has taken up residence in the Bay of Somme, and you can see them here at high tide.
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Cross the Bay of the Somme from Crotoy, take the steam train back and then go to Le Hourdel to see the seals, that's all you need for a wonderful holiday. https://youtu.be/nenNw-_0ADE
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It's great to see how the landscape keeps changing due to the tides
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The Crotoy municipal marsh is often compared to a miniature version of the Camargue, offering a panorama rich in biodiversity. This natural space promises a total immersion experience for flora and fauna lovers. Don't forget your binoculars to better observe the various species that make their home there, such as storks, swans, ponies and Highland cows. It is also possible to hear or see the green tree frog, an amphibian characteristic of this region.
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The chalet's motte pond is a small pond surrounded by trees and flowers, where you can enjoy the tranquility of nature. The trail takes you to a viewpoint that offers panoramic views of the bay and dunes. You can admire the beauty of the landscape and breathe the fresh sea air.
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The chalet motte pond is a small pond surrounded by trees and flowers, where you can enjoy the tranquility of nature. The trail takes you to a viewpoint that offers panoramic views of the bay and dunes. You can admire the beauty of the landscape and breathe the fresh sea air.
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The car-free Ecological Holiday Park Belle Dune is located in a protected environment 2 km from the sea and is truly an oasis of peace. The holiday park consists of colored buildings with Picardy influences, spread over 6 districts. The pastel colors in the interior of our holiday homes and apartments exude peace and relaxation. Residents of the Maisons de la Plage district can enjoy a heated indoor swimming pool a stone's throw from their accommodation.
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The 'lakes' around Le Crotoy are primarily characterized by the vast estuarine system of the Bay of Somme. This includes extensive wetlands, marshes, and coastal lagoons, rather than traditional inland lakes. These diverse water bodies, such as the Somme Bay itself, offer unique natural environments rich in biodiversity.
For exceptional birdwatching, visit the Parc du Marquenterre, located just 6 km from Le Crotoy. This renowned ornithological park features a mosaic of lakes, marshes, and reed beds, serving as a crucial stopover point for nearly 300 species of migratory birds. You can find guided nature walks and observation posts there.
The View of the Bay of the Somme and its seals is a prime spot to observe the largest French colony of harbor seals, especially at high tide. The broader Somme Bay is also home to grey and harbor seals, with various viewing spots along the coast.
The Crotoy municipal marsh, part of the area highlighted as On the Seagull Route, is rich in biodiversity. Visitors can observe various species like storks, swans, ponies, and Highland cows. It's also known for the green tree frog, an amphibian characteristic of this region.
The best time to visit for wildlife viewing, especially birds, is during spring and autumn migration periods. Seals can often be seen year-round, but their visibility depends on the tides. The changing landscape with the tides offers a different experience each day.
Yes, the Saint-Firmin Water Sports Centre in Le Crotoy offers opportunities for various water sports. While details on the specific 'lake' are limited, it's suitable for activities such as sailing, kitesurfing, windsurfing, and sea kayaking.
Absolutely. The region offers numerous walking opportunities. You can explore trails within the Parc du Marquenterre or enjoy routes like those found in the Running Trails around Le Crotoy guide, which includes paths around the Somme Bay. The GR120 trail also passes through the area, offering coastal walks.
Yes, cycling is a popular way to explore the region's water bodies and natural areas. You can find various routes, including those in the Road Cycling Routes around Le Crotoy guide, which features paths like the 'Route Blanche' and routes around the Parc du Marquenterre and Somme Bay.
Many areas are family-friendly. The Parc du Marquenterre offers an engaging experience for all ages with its birdwatching opportunities. The Grand Lake - Belle Dune is part of an ecological holiday park with family-oriented facilities. The vast Baie de Somme itself provides stunning landscapes for family walks and exploration.
While specific accessible routes vary, many of the paths in the Parc du Marquenterre are designed to be accessible. For general walks, the flat terrain of the Bay of Somme offers relatively easy walking, though some areas may involve sand or mudflats depending on the tide.
In autumn, it's advisable to wear layers as the weather can be changeable. Waterproof and windproof outer layers are recommended, especially near the coast. Sturdy, waterproof walking shoes or boots are essential, as paths can be damp or muddy, particularly in marshy areas.
Le Crotoy itself offers a selection of cafes, pubs, and restaurants. While direct facilities might not be immediately adjacent to every natural area, you'll find options within a short distance, especially in the main towns and villages surrounding the Bay of Somme.
Visitors frequently praise the magnificent landscapes and the rich ecological diversity. The opportunity to observe migratory birds and the largest colony of seals in France is a major draw. The ever-changing scenery due to the tides and the immersive experience in unique wetland ecosystems are also highly appreciated.


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