What is the significance of coelenterates in nature and in human life?

Cavities play an important role in nature. They create natural communities with other animals and plants, where they are an important part of them. Some representatives of coelenterates regulate the number of other living organisms, since they are heterotrophs, therefore they eat other living organisms. A person uses them in different industries. First of all, in the digestive industry. Some jellyfish are edible, so they are grown on special farms or simply caught.