La Rochelle – 12.06.2026: The giant Asian whelk Rapana venosa is increasingly spreading in the waters of Charente-Maritime and poses a serious threat to the local oyster farming. This invasive shellfish species, which often weighs more than one kilogram, releases an enzyme that opens oyster shells, thereby endangering the farms.
Fishermen report an alarming increase of Rapana venosa in their nets. At first, only one specimen was caught per day, but now they capture more than ten. This development has prompted fishermen to seek solutions to minimize the impact of this invasive species.
The French research institute Ifremer and the regional fishermen’s union propose to market Rapana venosa as a regulated product. By exploiting this shellfish as a food source, not only could its spread be slowed down, but also a new source of income for fishermen could be created. This initiative aims to turn the problem of this invasive species into an economic opportunity.
The idea of marketing Rapana venosa is not new. As early as April 2026, an article mentioned how this invasive species could go from being a threat to a commercial opportunity for fishermen. The challenge is to undertake the necessary regulatory steps to introduce this shellfish as an edible product on the market.
The spread of Rapana venosa has consequences not only ecologically but also economically in the region. Oyster farming represents an important economic sector in Charente-Maritime, and the threat posed by this invasive species could jeopardize many jobs. It is therefore crucial to take effective measures to slow its spread while creating new economic prospects.
Discussions about the marketing of Rapana venosa highlight the importance of finding innovative solutions to environmental problems. By combining ecological and economic interests, it is possible to develop sustainable strategies beneficial both to the environment and the local economy.
In the coming weeks, new discussions are expected between fishermen, Ifremer, and the competent authorities to plan concrete steps for the implementation of this initiative. The goal is to find a balance between environmental protection and support for the local economy.
The monitoring of this situation will continue with close attention, as it is of great importance both for the environment and the economy of Charente-Maritime.