Chennai beach’s stunning blue glow goes viral. Science behind rare bioluminescent waves

Chennai's coastline recently dazzled locals with a rare natural phenomenon as bioluminescent waves lit up the night sky along the East Coast Road (ECR) beach. Videos of the radiant blue glow went viral, leaving residents and tourists awestruck. The glowing waves are caused by bioluminescent marine organisms like plankton, which emit light through a chemical reaction. While this breathtaking sight is harmless, it may indicate environmental changes due to heavy rains and nutrient-rich waters.