Introducing MAGUAYAN: the cutting-edge Microplastics Assessment and Gathering Unit for Analyzing Yield in Aquatic Networks. This innovative buoy is set to transform environmental monitoring through advanced technology deployed across diverse aquatic environments. Equipped with an electronic microscope, Raspberry Pi 4B, and precision motors, MAGUAYAN efficiently collects, detects, and quantifies microplastics in real-time. The collected data is seamlessly transmitted to a centralized database, offering critical insights into microplastic pollution. By supporting the United Nations' 17 Sustainable Development Goals, MAGUAYAN contributes directly to Clean Water and Sanitation (Goal 6), Life Below Water (Goal 14), and Responsible Consumption and Production (Goal 12), while promoting Sustainable Cities and Communities (Goal 11), Climate Action (Goal 13), and Partnerships for the Goals (Goal 17), among others. This tool plays a vital role in advancing global water conservation and environmental sustainability efforts.