Italy: Reason revealed for Venice canals to turn green | World News

A patch of phosphorescent green liquid that appears on the Grand Canal in Venice is caused by the chemical fluorescein.

Environmental officials confirmed the source of the discoloration on Monday after images on social media showed a bright green area around the Rialto Bridge, which is near an embankment lined with restaurants.

A patch of bright green is seen along the embankments that line restaurants along the Grand Canal in Venice, Italy, Sunday, May 28, 2023. Venice police are investigating the source of a patch of phosphorescent green liquid that appeared on the city's famous Grand Canal on Sunday.  (AP Photo/Luigi Costantini)
Photo: Associated Press

Fluorescein – a non-toxic chemical – is primarily used in underwater construction to help identify leaks.

It could also be used in medicine — in the form of eye drops — to identify lesions and foreign objects, according to the National Institute for Health and Care Excellence.

People look at Venice's historic Grand Canal as a sheet of phosphorescent green liquid spreads through it, Sunday, May 28, 2023. Luca Zaya, the governor of the Veneto region, said officials had asked the police to investigate to determine who was responsible, as environmental authorities also tested the waters.  (AP Photo/Luigi Costantini)
Photo: Associated Press

Although non-toxic, the high concentration of luciferin found in the canal suggests it may not have been the result of an accident, according to CNN.

Further test results are expected later this week, which may help determine the exact amount of the substance in the water.

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Italian police launched an investigation into the incident on Sunday.

it followed countless episodes Italyenvironmental groups have been targeting monuments with colors and dyes.

Activists use plant charcoal to close waters Rome’s Trevi Fountain black Protest against fossil fuels.

However, unlike previous cases, no protest group has yet come forward to claim responsibility for what happened in Venice.

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