The yellow inside the sea urchin is sea urchin yellow, which is the gonad of the sea urchin, and has the effects of consolidating essence, strengthening yang, benefiting heart and strengthening bones. Sea urchin is an echinoderm that grows in the ocean. Its hemispherical shell is made of hard calcareous with thorns, and there are five small yellow thick porridge in the body cavity wrapped by the shell, which is yellow for sea urchin.

Sea urchin yellow is fresh meat peeled from fresh sea urchins. There are two ways: water box storage and direct wooden box transportation. Packing in wooden cases is afraid of transport bumps. The shelf life of fresh sea urchins is calculated from peeling, and the transportation time generally does not exceed 4-5 days. It will go bad after a long time and is not recommended to eat. It is suggested to choose the offshore waters with good water quality. The main producing area of high-quality sea urchins in China is Dalian, Liaoning.