2. Wild sea cucumbers generally grow in the sea area with a water depth of about 20 meters, and their feet are generally short and thick. Artificial cultured sea cucumber feet are relatively slender.

3. The sand mouth of wild sea cucumber is big and hard, the meat is thick and elastic, and the tendons are wide and full.

4. The meat quality of captive sea cucumber is soft and not firm.

5. Wild sea cucumbers are spindle-shaped and look strong, while captive sea cucumbers are slender and lack tenacity.

6. backstab, a wild sea cucumber, is thick and varied in thickness. The backstab of captive sea cucumber is shorter and the length is the same.

7. Water-soaked sea cucumbers are huge in size, hard and tough in meat, and do not buy them with pungent smell.