Ecological monitoring refers to the systematic observation, measurement, and analysis of biological, physical, and chemical components of ecosystems over time. In the context of aquatic ecosystems—including oceans, seas, rivers, lakes, wetlands, estuaries, and groundwater systems—ecological monitoring plays a critical role in understanding ecosystem health, detecting changes, and guiding sustainable management. Its significance becomes particularly evident when examined through the lens of the Sustainable Development Goals, which emphasize integrated, science-based approaches to achieving environmental protection, social equity, and economic development. By generating reliable data, ecological monitoring acts as a foundational mechanism for aligning aquatic ecosystem management with the objectives of the SDGs. Aquatic ecosystems are central to several SDGs, notably SDG 6 on clean water and sanitation, SDG 13 on climate action, SDG 14 on life below water, and SDG 15 on life on land, while also supporting SDGs related to food security, health, poverty alleviation, and sustainable livelihoods. Ecological monitoring enables the assessment of water quality parameters such as dissolved oxygen, nutrient levels, pH, turbidity, and contaminants. These indicators are essential for ensuring safe drinking water, reducing water-borne diseases, and maintaining ecological integrity. By tracking trends in pollution and eutrophication, monitoring supports SDG 6 by informing policies aimed at reducing untreated wastewater discharge, improving sanitation infrastructure, and safeguarding freshwater resources. In marine and coastal ecosystems, ecological monitoring is indispensable for advancing SDG 14. Continuous monitoring of coral reefs, mangroves, seagrass beds, and fish populations provides insights into biodiversity