A mysterious patch of fluorescent green water that appeared in Venice's famed Grand Canal Sunday was caused by a chemical commonly used in underwater construction to help identify leaks, environmental authorities say. The chemical – fluorescein – is non-toxic. It remains unclear how the substance ended up in the canal, but the Regional Agency for the Environment in Venice (ARPAV) said given the volume released it was unlikely to be an accident.
Venice authorities investigate after canal turns fluorescent green
Venetian authorities are investigating after a patch of fluorescent green water appeared in the famed Grand Canal on Sunday morning. “This morning a patch of phosphorescent green liquid appeared in the Grand Canal of Venice, reported by some residents near the Rialto Bridge. The prefect has called an urgent meeting with the police to investigate the origin of the liquid,” Veneto regional president Luca Zaia wrote on Twitter.