Test undergraduate students' understanding of the primary environmental drivers (nutrient loading, hydrodynamics, climate variability, species interactions) and ecological consequences (toxic events, hypoxia, food‑web disruption, biodiversity loss) of harmful algal blooms (HABs) in coastal systems. Scope includes identifying causal mechanisms, interpreting basic observational data (time series, nutrient ratios, temperature/salinity trends), evaluating impacts on benthic and pelagic communities, and critically assessing monitoring and mitigation approaches; questions will require explanation of mechanistic links, comparison of regional case studies, and application of concepts to predict outcomes under changing environmental conditions.