Color: The color of real sea cucumber is brown and dark brown; The color of artificial sea cucumbers is a little black, and it will fade after blisters, which shows that they are all dyed fake sea cucumbers.
Appearance: the shape of real sea cucumber has thorns of different lengths, and the overall shape of the surface is still very complete; The spines of artificial sea cucumbers are generally flat and have some damage on the surface. It should also be noted that the real sea cucumber is elastic to the touch, and the fake sea cucumber is not elastic enough to the touch.
Internal structure: the inside of the true sea cucumber is empty, and there are some tendons on the inner wall; The interior of artificial sea cucumber is very smooth and there is no opening.
Selection skills of sea cucumber:
1, the appearance is intact. The selection of sea cucumbers must ensure that the appearance is not damaged, so as to ensure the quality of sea cucumbers.
2, no impurities. Some sea cucumbers are filled with sand, salt or alum, so be sure to carefully check whether there are these impurities when selecting sea cucumbers.
3. degree of dryness. Some sea cucumbers are mixed with too much water, which not only increases the weight of sea cucumbers, but also has too high water content, which is not conducive to the preservation and quality assurance of sea cucumbers.