invertebrate
animal without a vertebral column
Ctenophora
phylum of marine invertebrates
sea slug
group of marine invertebrates with varying levels of resemblance to terrestrial slugs
Arthropoda
phylum of invertebrates with jointed exoskeletons
Platyhelminthes
phylum of animals, flatworms
Annelida
phylum of segmented worms
Bryozoa
phylum of marine invertebrates
Echinodermata
phylum of animals
Rotifera
phylum of animals
arrow worms
phylum of marine worms
Nemertea
phylum of worms