Hello. Distinguishing by size is a relatively reliable method. But it is not the only one. The scientific method is based on a professional method of testing which should be submitted to a scientific research institution.

If you look at it from the size point of view, the Palace Products Sea Cucumber 7 years sea cucumber king, dry sea cucumber in about 8 cm, a catty of about 25 heads.

Courtesy of Gongpin Sea Cucumber Research Institute