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The tranquil blue-green waterways of Venice experienced a bizarre transformation recently when a patch of fluorescent green water emerged in the city’s Grand Canal. The unexpected color change, reported by residents near the famous Rialto Bridge, has prompted Venetian authorities to launch an immediate investigation.
Source: Guardian News/Youtube
The vibrant patch, first spotted around 9:30 a.m., slowly expanded, prompting both awe and concern from locals and tourists alike. Images flooded social media platforms, showcasing gondolas and water taxis skimming over the emerald ripple. Luca Zaia, the Veneto regional president, affirmed the authorities’ efforts to determine the source of the mysterious green substance, with water samples collected and CCTV footage scrutinized.
While no environmental group has claimed responsibility for the phenomenon, some fingers pointed towards environmental activists, notorious for targeting Italian cultural heritage sites. However, the group Ultima Generazione, previously involved in a protest at Rome’s Trevi Fountain, denied involvement when queried.
Italy’s fire brigade, along with ARPA Veneto – the regional agency responsible for maintaining the environmental integrity of the Grand Canal, are jointly working on the analysis of water samples to ascertain the nature of the substance.
While theories circulating online suggest algae or illegal substance dispersal as possible causes, this isn’t the first time the Grand Canal has seen an unexpected color shift. Notably, in 1968, Argentine artist Nicolás García Uriburu dyed the waters green using a fluorescent dye called Fluorescein during the annual Venice Biennale, aiming to draw attention to ecological issues.
Interestingly, the timing of this occurrence coincides with Venice’s Vogalonga boat event, an initiative aimed at preserving Venetian traditions and promoting environmental awareness, as well as the Architecture Biennale, which opened just last weekend.
As we all watch and wait for the investigation’s findings, let this event serve as a vivid reminder of the delicate balance between human activity and our precious ecosystems. This is a call to action to respect and preserve our cultural and natural heritage sites. After all, we all have a role to play in safeguarding our shared home – Earth.

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