Compensation measures

Improvement of the tranquility of marine mammals

Objectives and methodology

The objective of this measure is to strengthen the peace and quiet of marine mammals in the Normandy Breton Gulf during the construction phase of the wind farm off the coast of Saint-Brieuc Bay.

Several meetings were organized with state services and marine mammal experts during 2019 and early 2020.

The species targeted by this awareness program are the main species of cetaceans and pinnipeds frequenting the Normandy Breton Gulf, namely the bottlenose dolphin, the common dolphin, the Risso's dolphin, the porpoise, the calf seal, and the seal. gray.

An awareness zone, active from March 2021 to October 2023, will support targeted awareness actions.


The actions will aim to improve the image and knowledge of the behavior and lifestyle of marine mammals to better protect them. The information disseminated will also aim to raise awareness among sea users of the respectful approach to marine mammals in the event of a chance encounter.

Several awareness tools are being developed:

Creation of a booklet whose content was discussed with State services and the experts previously cited.

The production of a short awareness video is also planned.

Numerous relays along the coast have been identified for the implementation of this measure.

Location of actions


Figure SEQ Figure \* ARABIS 2: Marine mammal tranquility awareness zone

If the east of the bay is the subject of active awareness raising, notably by Al Lark, the west of the bay is less subject to awareness raising around marine mammals and will therefore be mainly targeted for Ailes Marines ' actions. Ailes Marines .

Schedule and Status


Measure implemented


  • In the pre-construction phase 87% 87%


  • In construction phase 0% 0%

2024, 2025, 2026, 2034, 2044

  • In the operating phase 0% 0%

All compensation measures

Follow-up measures

Reduction measures

Accompanying measures