The shark's fin is also divided into three, six, nine, and among the many shark's fins, the top one is "Tianjiu Shark's Fin". Some people want to ask, "Why is it the "Heaven's Nine Shark's Fin" and not other varieties of shark's fins?" Because the "sky nine fins" from the world's rarest shark species "whale shark" and "basking shark", and these two kinds of sharks are the world's largest volume of one of the sharks, the number of The two sharks are among the largest in the world, and their numbers are low, they are basically endangered, and they are not easy to catch.

The main component of shark's fin is protein, one of the nutritional value of protein, relative to eggs, meat protein quality is still a little worse, it belongs to the incomplete protein; but from the unsaturated fatty acids, shark's fin and ordinary sea fish, and there is no extra special value. However, long-term consumption of shark's fin can play a lowering of blood lipids, anti-atherosclerosis and anticoagulant components of the cardiovascular system diseases are preventive and therapeutic effects, while the shark's fin is also rich in collagen, which can be refreshing dishes, and more so that the skin is soft and smooth.