Because tuna is a deep-sea fish, it carries no parasites, so it can be eaten raw. The method of eating tuna raw is the most classic. Tuna is a fish with red flesh, which is due to the large amount of myoglobin contained in the tuna's muscles. Tuna is a popular seafood with high economic value, and people often cut it into sashimi and eat it directly.

Tuna meat is tender, fresh, high protein content; rich in docosahexaenoic acid (DHA), eicosapentaenoic acid (EPA) and other biologically active polyunsaturated fatty acids; at the same time, methionine, taurine, minerals and vitamins are rich in content, is the International Nutrition Association recommended by the green non-polluting health food.