Cultured sea cucumbers are also nutritious, but the nutritional value is not as good as that of natural sea cucumbers, but its advantage is that the price is relatively cheap.

The nutrition of wild sea cucumber is far superior to that of cultured sea cucumber. There are two ways to cultivate sea cucumbers, one is to cultivate sea cucumbers in shrimp ponds or enclosed seas, and the other is to raise seedlings artificially and let them grow back into the sea, that is, to sow sea cucumbers at the bottom. From the growth process of sea cucumbers, they can be regarded as wild sea cucumbers.

At present, pure wild sea cucumbers and bottom-sown sea cucumbers are mixed together and cannot be distinguished. From the point of nutritional value, the water level in the sea around the dam or the shrimp pond is very shallow, and the sunlight is sufficient. The sea cucumber grows rapidly and the nutrient accumulation is low, just as the value of cultured turtles is far lower than that of wild turtles. What is even more alarming is that some sea cucumber farmers add antibiotics to the ponds where sea cucumbers are cultivated in order to prevent and control pests and diseases. In order to promote the rapid growth of sea cucumber, growth hormone is added to feed, which leads to drug residues in adult sea cucumber and is potentially harmful to human body.

In addition, in recent years, the problem of excessive heavy metals in aquatic products has become the focus of food safety. Although domestic public opinion has not affected sea cucumbers, the sea cucumber culture area is adjacent to pollution sources, and the seawater circulation is slow. In addition, sea cucumbers are slow to move and live in even a slightly polluted environment all the year round, and the consequences can be imagined. The indexes of heavy metals such as cadmium, lead, mercury, chromium and zinc of this sea cucumber are far higher than its nutritional indexes. However, the coastal natural sea areas such as Weihai and Rongcheng in Shandong Province are less polluted, and the quality of the growing sea cucumber is the best. Its characteristics are: thick meat, rich nutrients and good taste, which is recognized by the society as the best tonic.