Pigeon Key: Invertebrate Biodiversity

Ctenophora-comb jelly
















Porifera-sponges



















Cnidarian-jellyfish



















Nematoda-round worms



















Annelida-segmented worms



















Platyhelminthes-flat worms

flatworms

Arthropoda-jointed feet--> chelicerata--> crustaceans-->insecta

Molluska-shell-->gastropods-->bivalve-->cephlapoda

Echinoderm-spiny skin-->starfish-->sea biscuits-->sea cucumbers

Sea Cucumber

Sea Urchin