The European green crab is a global invader currently being turned into dinner.

Nature · Published 3 October 2026 Swipe more like this →

In short: Carcinus maenas is a highly successful invasive species that has colonized coastlines across the globe. From North America to Australia, this resilient crab disrupts local ecosystems by preying on native shellfish and competing for resources. Now, researchers and chefs are attempting to control its spread by creating new culinary markets.

Native to the northeast Atlantic and Baltic Sea, the European green crab has become one of the world's most widespread invasive species. Its success is driven by its ability to tolerate a wide range of temperatures and salinities, allowing it to thrive in diverse marine and estuarine environments. Dispersal mechanisms are varied, ranging from natural larval drift to human-assisted transport via ships' hulls, ballast water, and aquaculture materials.

The impact of this crab on local ecosystems is significant. In North America, it has been implicated in the decline of native clam populations and the destruction of commercial fisheries, including soft-shell clams and scallops. Because eradication is often impossible, control efforts have shifted toward mitigation. In Washington state, the Lummi Nation has engaged in intensive trapping, while researchers at the University of Maine are exploring ways to commercialize the crab as a food source to incentivize its removal.

Culinary interest in the green crab is growing, with initiatives like The Green Crab Cookbook and the development of value-added products like crab-mince empanadas and patties. While the crab is traditionally used in soups in its native range, adapting methods from the Italian cultivation of soft-shell Mediterranean green crabs offers a potential model for managing invasive populations. These efforts aim to balance ecological protection with economic opportunity, though the long-term efficacy of such strategies remains a subject of ongoing study.

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