Across
- 4. — Sea animal with no brain or organs
- 8. — An animal without a backbone
- 9. — Body symmetry where both sides match
- 12. — Body parts used for grabbing or stinging
- 13. — Long, soft-bodied animal (like earthworm)
- 17. — Group including crabs and lobsters
- 18. — Segmented worm group
- 19. — Sea animal that forms reefs
- 20. — A soft-bodied animal like a snail
Down
- 1. — Hard outer covering of some animals
- 2. — Group including jellyfish and corals
- 3. — Body divided into repeating sections
- 5. — Lives where an animal naturally survives
- 6. — Animal that hunts others
- 7. — Ocean animal with stinging tentacles
- 10. — Animals with jointed legs and exoskeletons
- 11. — Body symmetry in a circle pattern
- 14. — Has arms with suction cups
- 15. — Animal that gets hunted
- 16. — Slow-moving animal with a shell