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Do cnidarians have electricity?
yes 2 pairs
If you mean the longest-lived, gold corals and black corals can be2000 to 4000 years old.
They don't really breathe, they use diffusion to get the nutrients they need through their body walls. They use diffusion for respiration, excretion, and circulation.
Cnidarians, also known as coelenterates, are an extremely varied group of animals. Examples include sea anemones, hydras, jellyfish, corals, and the Portuguese Man of War.
They are polyps or medusas and have radial symmetry. They have a mouth/anus, tentacle, gastrovascular cavity, gastodermis, mesoglea, epidermis, and in polyps, a body/stalk.
This is straight from www.thefreedictionary.com, so I get no credit at all: "Any of various invertebrate animals of the phylum Cnidaria, characterized by a radiall…y symmetrical body with a saclike internal cavity, and including the jellyfishes, hydras, sea anemones, and corals. Also called coelenterate."
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 organ…ized into tissues. the inner layer forms a digestive cavity where food is broken down. A jelly fish. Cnidarian's have a sting cell called a cnidnocyte which is the defining feature.
Cnidarians are acoelomates... along with Porifera, Ctenophora, and Platyhementhes.
Like all animals; thru their food. They are filter feeders, if that helps. The water carries the little bits of food in their body along with the oxygen they need.
jellyfish . hydra . sea anenome . coral anemone medusas and poylp
No. Rather, it belongs under Phylum Mollusca, and class Cephalopoda. A Cnidarian has nematodes and cnidocytes, which a cuttlefish does not have.
Circular,soft body,usually with tentacles; no segments. Cnidarians include: jellyfish, sea anemones, coral animals.
In Animal Life
A cnidarian is an animal with stinging bristles, like a jellyfish,a portoguese manowar, and coral .