Name: Kingdom Animalia Type of organism: All animals, including you! Numbers of species: 1,500,000 - but this is only a rough guess Where they are found: Almost everywhere - in the sea, in freshwater, and on land Description: Animals are multicellular (many celled) organisms. Their cells have no cell walls, and they do not produce their own food (as plants do). Need to know: There are many different groups of animals, all living in different ways. Sponges, corals, worms, insects, crabs, snails, starfish, birds, mammals, reptiles, fish and amphibians are all animals. Explore Animal I.D. a bit more to find out how we classify animals.