The marine environment
and the offshore wind farm

The offshore wind farm in the bay of Saint-Brieuc

Now that you know how an offshore wind farm works, we will explain to you how the Saint-Brieuc offshore wind farm respects and preserves the environment that surrounds it.

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Monitoring of marine animals and mammals

In the area of ​​the Saint-Brieuc offshore wind farm, several marine mammals live.

We find among these marine mammals, 2 large groups:

Dolphins, porpoises and even whales:

otherwise called cetaceans…

Seals :


otherwise called pinnipeds…

The particularity of these mammals is that they live mainly in the sea. They swim like fish but do not breathe like them! They have to come to the surface to be able to breathe.

Why do we need to protect marine mammals?

Marine mammals are wild animals

Their life is punctuated by important events: sleep, moulting , maintenance of the coat, birth, breastfeeding of the young, etc.

Getting close to them can scare them away and disrupt their life cycle. You wouldn't want to be woken up in the middle of your sleep, would you?

vulnerable species


Intentionally disturbing animals in their natural environment is prohibited by law

Some species of marine mammals present in the park:

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The common dolphin

📏 Its size: 2 meters
💪 Its weight: 100 kg
🎨 Its colors: ocher and gray spots
😎 Its behavior: moves in groups

The gray seal

📏 Its size: 2 to 3 meters
💪 Its weight: up to 150 kg for males and 250 kg for females
🎨 Its colors: silver gray spotted with black for males and dark gray with light spots for females
😎 Its behavior: evolves in rocky environments

The harbor porpoise

📏 Its height: 1.5 meters
💪 Its weight: 60 kg
🎨 Its colors: its back is dark and its belly is light
😎 Its behavior: it is rather solitary

The sea calf

📏 Its size: 1.5 to 2 meters
💪 Its weight: 90 kg for males and 120 kg for females
🎨 Its colors: from light gray to dark brown with dark spots
😎 Its behavior: evolves in rocky environments

Do you usually walk on coastal paths or at sea? ObsEnMer is an application made for you! With your parents' prior permission to download it, it will allow you to record all your animal observations during your outings.

Measures to preserve fishing

Fishing and the wind farm

The bay of Saint-Brieuc is a place where scallops live and are fished. The wind farm was moved 6 km to the north so as not to disturb the scallops and fishing.

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What is a scallop?

The scallop is a species of bivalve mollusc, this means that its shell is made up of two parts called the valves, connected by a ligament so that it can open.

It is recognized by its large size, up to 16 cm, as well as its fan-shaped shell. It moves over short distances, in leaps, by clicking its two valves. In the wild, it can live up to 20 years.


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