Accompanying measures

Monitoring of marine mammals by photo-identification

Objectives and methodology

The objective is to contribute to the knowledge of marine mammals in GNB by contributing to the catalogue currently being compiled by the Groupe d'Etudes des Cétacés du Cotentin. This measure therefore includes outings financed by Ailes Marines.
Two species are targeted by this measure: the bottlenose dolphin and the Risso's dolphin.

The bottlenose dolphin

The risso dolphin

The objective is therefore to participate in the enrichment of the photo identification catalogue of bottlenose dolphin individuals present in the GNB, and to participate in the creation of this catalogue for Risso's dolphins. This method thus allows the acquisition of precious information relative to the fidelity to a site, the areas of movement and living space, the periods of frequentation, the individual relationships, the life cycle and the ecology of the species in the broad sense.

A letter of intent from the GECC has been issued for the implementation of this measure. Discussions will be held with this organization in 2022 to prepare for the implementation of this measure.

Location of actions


Location of the GECC's area of action

Planning and Status

Measure under development

Three follow-up sessions will be organized:

  • 2023-2024 2% 2%
  • 2027-2028 0% 0%
  • 2032-2033 0% 0%

All accompanying measures

Follow-up actions

Reduction measures

Compensation measures