A. leeches platyhelminthes flatworms such as planaria, liver flukes
b. octopus and slugs annelida* earthworms and marine bait worms
c. spiders, ticks, and crabs mollusca* snails, clams, squid
d. corals and sea fans nematoda roundworms such as pinworms or heartworms
e. brittle stars and sea cucumbers arthropoda* insects, lobsters, shrimp f. humans, sharks, and lizards echinodermata* sea stars, sea urchins g. tapeworms chordata* dogs, frogs, fishes, and birds h. hookworms and the worm causing elephantiasis