This cluster of papers explores the impact of aquaculture, particularly oyster farming, on marine ecosystems, food supply, and sustainability. It covers topics such as the role of aquaculture in global seafood production, environmental effects of shellfish farming, ecosystem services provided by oyster reefs, and the potential for integrating seaweed biofiltration in mariculture. The cluster also addresses issues related to food security, ecological engineering in aquaculture, and the influence of aquaculture on marine infectious diseases.