2. Its meat is delicious, and it is called "the freshest in the world" and "the crown of all kinds of flavors". Moreover, its nutrition is comprehensive. It contains protein, fat, carbohydrate, iron, calcium, phosphorus, iodine, vitamins, amino acids and taurine, and has low heat energy, high protein and low fat, and can prevent and treat chronic diseases of middle-aged and elderly people. This is a cheap seafood.