Invertebrates

Invertebrates  include insects; arachnids; crabs, lobsters and their kin; snails, clams, octopuses and their kin; starfish, sea-urchins and their kin; and worms

Annelida (sea worms, earthworms)

Arachnida (spiders, scorpions, ticks, mites, pseudoscropions, harvestmen)

Branchiopoda (water fleas, brine shrimp)

Cirripedia (barnacles)

Chilopoda (centipedes)

Copepoda (copepods)

Diplopoda (millipedes)

Insecta (insects)

Malacostraca (isopods, amphipods, crabs)

Merostomata (horseshoe crabs)

Mollusks

• Gastropods (snails and slugs)
• Cephalopod (octopus, squid and cuttlefish)
• Bivalve (clam, muscle, oyster and scallop)

Nematoda (roundworms, hookworms, threadworms)

Platyhelminthes (flatworms, tapeworms)

Pycnogonida (sea spiders)

Trilobita (trilobites)