The document summarizes research on the impact of increased nutrient input on coral reefs in Bonaire and Curacao. Monitoring sites were established on both islands to analyze coral cover, algae growth, phytoplankton levels, nutrient levels in seawater, and nitrogen isotope ratios in algae. Results showed Curacao had higher macroalgae growth, chlorophyll α levels, and nitrogen levels compared to Bonaire, indicating higher pollution. While some sites on Curacao like harbors had expected high pollution, one resort was surprisingly polluted from an unknown source. There was a correlation found between nitrogen levels and phytoplankton but not between nitrogen and macroalgae growth. The reefs are relatively un