Sydney’s red tide turns luminescent in the night

Many of Sydney’s beaches made headlines earlier this week when they became victims of a massive red algae bloom–and now the algae is glowing bright blue at night, according to the Sydney Morning Herald.

“I’ve never seen anything like it in my life,” a witness told the paper. “It was like something from space.”

The bioluminescent algae can be seen in the Fairfax Media video above, and scientists say that the algae emits light when it is disturbed, such as when it gets caught up in pounding surf.

While red tides are common in places such as southern California, they are relatively rare along Sydney’s beaches. Some red tides can be dangerous to humans, such as the famous New England red tide of 1972, which caused several cases of paralytic shellfish poisoning, but luckily Australia’s recent red tide was nontoxic.