INVERTEBRATE GROUPS

• Sponges:They filter seawater and retain nutritive substances for food.
• Cnidarians: by example: coral,anemones and medusas.
• Worms: many are parasites. By example: earthworm.
• Echinoderms: are symmetrical. By example: starfish.
• Arthropods: are covered by a hard exoskeleton. By example: beetle.
• Molluscs: many are covered by one or two shells. By example: clam