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ARTHROPODS

• Characteristics: molt, exoskeleton
• Body Structure: exoskeleton, jointed appendages
• Reproduction: most with internal fertilization and laying eggs
• Examples: Crabs, spiders, insects, millipedes

SPONGES

• Characteristics: water goes through them, live underwater
• Body Structure: pours, round body
• Reproduce: budding or release sperm which fertilizes an egg cell
• Examples: Barrel sponge, Stove-Pipe sponge

WORMS

• Characteristics: soft body, wiggly, some are microscopic
• Body Structure: bilateral symmetry, soft body
• Reproduction: depending on worm it is sexually or asexually.
• Categories: tape/flat, round, segmented worms

MOLLUSKS

• Characteristics: live in water and on land, a lot are edible
• Body Structure: soft body, some have an exoskeleton
• Reproduction: mainly sexually by laying eggs and getting them fertilized
• Examples: slugs, snails, octopi

CNIDARIANS

• Characteristics: radial symmetry,sting
• Body Structure: tentacles, mouth
• Reproduction: sexual-sperm have eggs, asexual-budding
• Examples: jellyfish, sea anamenes

ECHINODERMS

• Characteristics: some have prickly skin, can regenerate and they mostly live in water
• Body Structure: bilateral/five-fold symmetry, and they have a water vascular system
• Reproduction: mainly sexually by releasing eggs or sperm that produce a larvae
• Examples: starfish, sea urchin, sea cucumber