Set of ten posters, each featuring an animal from one of the invertebrate classifications of coelenterate (medusa), mollusc (snail), echinoderm (starfish), protozoa (amoeba), flatworm (varicose wart slug), annelid worm (leech), arachnid (tarantula), crustacean (lobster), insect (ladybird) and myriapod (centipede).

Each poster also lists three basic attributes of the group and three other examples of animals within that group.