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Brewery leak turns sea red in Japan

Visitors to a beach resort city in southwest Japan got a shock on Tuesday when they woke to discover the usually crystal-clear sea had turned an ominous shade of red – after a local brewery sprung a leak.

Photos and videos shared online showed blood-red water flowing through the rivers and port areas of Nago city, on the island of Okinawa, a destination better known for emerald waters and sandy beaches.

But a local brewery urged people not to worry, saying there had been a leak at one of its plants and that the discolored water posed no danger to humans or marine life.

“We believe it was caused by the leakage of propylene glycol – a food additive listed in enforcement regulations of the Food Sanitation Act – contained in cooling water used to cool our factory facilities. We believe the leaked cooling water flowed into a river through a rain gutter, causing the sea to turn red,” Orion Breweries said.

Propylene glycol is commonly used in the food, cosmetics and pharmaceutical industries. The US Food and Drug Administration (FDA) classifies it as “generally recognized as safe” for use in food.

Orion Breweries also apologized for causing “inconvenience and enormous trouble and worry” and said it had launched an investigation and was working with authorities to take “counter measures.”

Roughly 400 miles (640 kilometers) southwest of mainland Japan, Okinawa is Japan’s fifth largest island and has been a strategic location for US armed forces since the 1945 Battle of Okinawa in World War II.

The island is today a popular tourist destination for international travelers.

News of the red seawater amused some social media users but left others questioning if the water was safe.

One Twitter user said crowds of people had gathered to look at the red sea. “What is this? Is our ocean OK? The seawater is so red,” he tweeted.

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