On 18th August 2019, visitors to the Injambakkam beach in Chennai and Besant Nagar’s Eliot’s Beach noticed a blue shimmer on the waves i.e. Popularly known as ‘Sea Tinkle’. According to marine experts, the Noctiluca algae were behind this blue glow phenomenon. The algae exhibit the phenomenon of bioluminescence (or biologically produce light when disturbed). ..