Blue glow returns to S’pore waters, but frequent appearance a concern, says scientist

Bright blue waves seen at Changi Beach Park on March 24, 2022. The glow, caused by marine microorganisms, has been spotted again in Singapore waters. - ST FILE

SINGAPORE (The Straits Times/Asia News Network): The ghostly blue glow that washed up on Singapore’s shores in March has been spotted off Singapore’s southern shores, in the open waters around Sentosa, St John’s Island and Raffles Lighthouse.

This light is emitted by a group of marine micro-organisms called dinoflagellates, specifically Noctiluca scintillan, said Clarence Sim, a PhD student from Nanyang Technological University’s Genomic and Ecology of Eukaryotes Laboratory.