Green algae is visible on the waters of Laguna lake in Muntinlupa city, south of Manila, Philippines, 10 June 2019. The Muntinlupa City Health Office said they received complaints from residents of foul stench attributed to decaying algae along the banks of Laguna Lake, but according to environmental experts, the algae is beneficial to aquatic populations as it is food for the fishes. (Photo by Francis R. Malasig/EPA/EFE)
