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Another aspect of cnidarians is that all cnidarians have two layers of living tissue. These two layers are always separated by a gelatinous layer called mesoglea. The first layer of living tissue is known as the dermis, and the second layer is know as the gastordermis.
Most cnidarians are predators. You may be familiar with some cnidarians, such as sea anemones, corals, and jellyfish. All cnidarians are diploblastic, meaning they have two tissue layers: ectoderm and endoderm. Between the two tissue layers is a gel-like layer, the mesoglea. Within the body is the gastrovascular cavity which functions both in digestion (hence, gastro-) and in