By: Ethan, Cameron, and Trace Cnidarians By: Ethan, Cameron, and Trace

Jellyfishes Sea fans Sea anemones Hydras Corals Phylum

Body Symmetry Radial Radial body symmetry first born they are polyps (tiny looking structure that attaches itself to almost anything. second stage is the medusa phase (fully matured and can reproduce)

How does a Cnidarian eat? It's a predator that uses it tentacles to wrap its prey around. Known to eat fish, plankton and crustaceans

Diffusion is the most simplest form of circulating materials. Systems Diffusion is the most simplest form of circulating materials.   have an open circulatory system which allows them to breathe through their skin.

Excretion  Use diffusion Waste through anus Has excretory organs

Response Cnidarians do not have Ganglia No brain No central nervous system Sensory nerves to sense odors

Movement They have a ring of muscle cnidarians are motile at least one time in their life

Reproduction Cnidarians reproduce sexually The male shoots a cloud of sperm out of its mouth into the water and then fertilizes an egg that a female shoots out of its mouth Reproduction

Respiration Don’t have or need a true circulatory system  In direct contact with water causing them to live in clean, constantly moving water Respirate using diffusion

Classes Anthozo – corals Scyphozoa – jelly fish  Cubozoa – box jelly fish  Hydrozo – hydra