Abstract: A packaging for shellfish, such as mussels, or crustaceans, includes a closed container in which there is situated a quantity of living shellfish or crustaceans, optionally water originating from the shellfish or crustaceans, as well as a protective gas atmosphere. Subatmospheric pressure may prevail in the container. Furthermore, the sum of the quantities of O2 and CO2 may amount to 50% to 90% of the total gas content of the container, and the quantity of O2 may amount to 25% to 50% of the total gas content of the container.