According to new estimates, farmed shrimp from Asia may have one of the highest carbon footprints of any food.
More than half of all shrimp farms are located in Asia, primarily in areas that used to be mangrove forests. Mangroves are trees that grow in salt water, and they are important for marine ecosystems because they provide nutrients and shelter for many fish, turtle, and wading bird species. Mangrove forests are also important because they serve as a carbon sink, removing and storing more than 1,000 pounds of CO2) per acre each year.
But around the world, mangrove forests are being cut down to build shrimp farms. These farms are also often short-lived. The intensive farming methods pollute the environment, and disease spreads easily among the shrimp, which means that shrimp farmers must frequently clear new areas to stay in business.