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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.
What is a Cnidarian? cnidarians, such as jelly fish, sea anemones, hydra, and corals, have tentacles surrounding their mouth. they are a hollow-bodied animal with two celled layers that are organized into tissues. the inner layer forms a digestive cavity where food is broken down.A jelly fish.n animal that exists in a mudusa or poylp state. ----------- A cnidarian is defined by the root of its name, cnida, which is Greek for stinging nettle. All cnidarians, therefore, have cnidocytes, which are the stinging, adhering, or entangling cells that allow them to eat, defend, or move.