Small animals

The names of worms, animals with shells, and other animals that do not fit into any of the other categories.

• What general words refer to small animals such as worms?
  worm shellfish
• What words refer to one-celled animals (phylum Protozoa)?
  bacteria germ virus
• What words refer to sponges? (phylum Porifera)?
  sponge
• What words refer to water animals with tentacles (phylum Coelenterata)?
  coral sea anemone Portuguese man-of-war jellyfish hydra medusa
• What words refer to flatworms (phylum Platyhelminthes)?
  flatworm liver fluke intestinal worm tapeworm
• What words refer to roundworms (phylum Nematoda)?
  roundworm hookworm pinworm
• What words refer to rotifers (phylum Rotifera)?
  rotifer
• What words refer to mollusks (phylum Mollusca)?
  mollusk snail slug abalone oyster scallop mussel clam nautilus cuttlefish octopus squid conch
• What words refer to segmented worms (phylum Annelida)?
  segmented worm earthworm leech
• What words refer to walking worms (phylum Onychophora)?
  velvet worm walking worm
• What words refer to crustaceans (phylum Arthropoda, class Crustacea)?
  crustacean shrimp barnacle pill bug lobster crab crawfish crayfish
• What words refer to centipedes--animals with a body with many segments and two legs on each segment (phylum Arthropoda, class Chilopoda)?
  centipede
• What words refer to millipedes--animals with a body with many segments and four legs on each segment (phylum Arthropoda, class Diplopoda)?
  millipede
• What words refer to horseshoe crabs (phylum Arthropoda, class Merostomata)?
  horseshoe crab
• What words refer to brachiopods--animals with two shells and two arms (phylum Brachiopoda)?
  brachiopod lampshell
• What words refer to animals with spiny skins (phylum Echinodermata)?
  echinoderm sea cucumber sea urchin sand dollar sea star starfish brittle star
• What words refer to arrow worms (phylum Chaetognatha)?
  arrow worm