
jointed- leg animal : an invertebrate with an outside skeleton
appendage: structure that grow outside the animal body
exoskeleton:an eskeleton outside the body

moltin: sheddling and exoskeloton

antennae: appendage of the head that is used for senses

compound eye: eye with many lenses

spiny-skin asnimal: invertebrate with a 5 body design
tube feet: part of starfish that are like suction cups