Phylum: Cnidaria (Jelly fish, Sea anemones, Corals)

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  • These have 2 layers in the body plan.

  • There is a radial symmetry.

  • Jelly fish are mobile organisms. Sea anemones are sessile organisms.

  • Single entrance that serves the the cavity that functions of the circulation of respiratory gases and nutrient. These organisms are secondary consumers and posses stinging cells with toxins called nematocysts to disable prey.

  • Corals secrete a CaCO3 skeleton