Differences between sea duck eggs and salted duck eggs: different concepts, different distributions, and different foods.
Sea duck egg is a kind of duck egg produced by sea ducks raised at the seaside, while salted duck egg is a kind of duck egg produced by artificially raised ducks; Sea duck eggs are mainly produced in Beihai, Zhanjiang, Taishan and other coastal areas, while salted duck eggs are produced all over the country, among which Gaoyou salted duck eggs produced in Jiangsu are the most famous; Sea ducks mainly eat small fish, shrimp, shellfish, etc. on the beach, while ducks eat some feed.
Salted duck eggs are also called green eggs, green skins, etc., and in ancient times, they were called Xiandangzi. Salted duck egg is a Chinese characteristic dish. Salted duck egg has a long history in China and is loved by people.