terrestrial		invertebrate with calcareous shell which encloses a soft, unsegmented body
invertebrate		living on or in the ground
gastropod		lacking a back bone
mollusk		outgrowth of the body wall that lines the inner surface of the shell
herbivorous		slender, flexible appendages that serves as an organ of touch; feeler
radula		rough tongue used to break up food
mantle		eating plants
eyespot		greek "stomach"+"foot", a mollusk with a flattened muscular foot for moving and a head with stalked eyes
tentacles		a sensory organ with a light-perceiving function