Venice Swamped by Cannibal Jellyfish Invasion

Venice is currently facing an extraordinary invasion of a bizarre, cannibalistic jellyfish known as the warty comb jelly or sea walnut. This invasive species, originally from the western Atlantic, has exploded in number throughout the city's fragile lagoon. Scientists attribute its success to climate change, which has created warmer waters and ideal salinity levels for the creature to thrive. The jellyfish, identified as Mnemiopsis leidyi, has a disturbing reproductive habit, reportedly consuming its own offspring. This proliferation is causing serious issues for local fishermen as the jellyfish clog nets and voraciously prey on fish eggs and plankton, vital components of the marine ecosystem. The species is recognized as one of the world's most harmful invasive species.

The invasion poses a substantial threat to the multi-billion euro Adriatic fishing industry, particularly its renowned clam and mussel production. Researchers warn that ongoing climate change could further enhance favorable conditions for these ctenophores, increasing their numbers and the risk to the lagoon. Venice is not alone in facing such ecological disruption; the region is also battling an influx of blue crabs, another Atlantic invasive species believed to have arrived via ship ballast water. These crabs cause significant damage to fishing gear and consume local seafood, leading Italy to promote blue crab consumption as a control measure.