InvertebrateWordNet Explorer

lacking a backbone or spinal column

the branch of biology that studies animals

a living organism characterized by voluntary movement

invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin

any of various invertebrate animals resembling a plant such as a sea anemone or coral or sponge

primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies

radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms

biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb