The invasive Pacific oyster has rapidly transformed marine ecosystems along the Swedish west coast by transforming soft seabeds into oyster reefs or filtering large amounts of plankton from the water mass, which can change the plankton composition. At the same time, it is a nutrient-rich local resource, high in minerals and protein, and remains largely untapped. Pacific Oysters filter water and have potential as both food and material. The Pacific Oyster project explores how large-scale harvesting and processing can help protect ecosystems, create sustainable food, and develop new circular materials.