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Shellfish includes aquatic invertebrates that have a shell, such as moluscs or crustaceans. This article is a comparison of the greenhouse gas (GHG) emissions (carbon footprints) associated with shellfish. The shellfish listed here have median GHG emissions ranging from about 7.80 to 27.80 kg carbon dioxide equivalent (CO2e) per kg of meat. This emissions information does not include the environmental impact of retail sale, consumer transport, storage, cooking, or disposal.[1]

Carbon Footprint[edit]

Global Warming Potential of Shellfish
Product Total (kg CO2e)


  1. S.J. Clune, E. Crossin, K. Verghese. Systematic review of greenhouse gas emissions for different fresh food categories. J. Clean. Prod., 140 (Part 2) (2016), pp. 766–783