The article highlights the growing concern over invasive marine species in the Venetian Lagoon, particularly ctenophores and blue crabs. Climate change has led to increased salinity and water temperatures in the Adriatic and Mediterranean seas, facilitating unchecked growth of these species. As ctenophores primarily feed on weaker local species, their proliferation poses a severe threat to the native marine ecosystem, which may result in irreversible changes affecting local communities and biodiversity.

The population surge of blue crabs in the waters around Venice is particularly alarming, as these crabs are highly adaptable and have disrupted existing food chains. The article explains how the blue crabs' quick expansion has led to discussions on utilizing them within the Italian culinary scene, though this proposal has faced resistance from some quarters. This resistance may stem from fears of promoting an invasive species that could further complicate the ecological balance in the lagoon.

The European Union is also mentioned in the context of responding to the invasion of blue crabs in Europe. Policies aimed at managing invasive species are essential not only for protecting local ecosystems but also for safeguarding the livelihoods of people who depend on these waters. The article underscores the urgency for effective strategies to combat the threats posed by these invasive species in order to preserve the delicate environment of the Venetian Lagoon and maintain the region's biodiversity.