Despite various efforts to address CO2 emissions, such as tree planting initiatives, these measures alone are insufficient to tackle one of the biggest environmental problems. An often overlooked aspect is the comparative oxygen-producing capacity of algae in relation to trees. While trees are commonly recognized for their role in oxygen production, the remarkable contribution of algae remains less acknowledged. Algae, also known as phytoplankton or microalgae, are estimated to generate about 70% of the world's oxygen, surpassing the oxygen output of trees. To address this knowledge gap, researchers are exploring the potential of algae, particularly those extracted from Harmful Algal Blooms (HABs) in Manila Bay, to become useful in photobioreactors. By investigating the HABs capacity to produce oxygen as well as their other possible uses, the researchers could help a solution to reduce CO2 emissions.