OSTRA aims to rethink oyster shells as a valuable, sustainable and local resource of biomaterial by developing a range of tableware products in the context of a circular economy.  In doing so, the project helps to reduce the pollution load to the environment while also reducing production and transport costs and displacing harmful or extracted materials. The project also involves local communities, creating a network of people (farmers, restauranteurs as material suppliers, scientists, designers, and so on) around waste oyster shells.