Across
- 2. Vascular System (WVS) – fluid system for movement
- 6. – sacs controlling tube feet
- 8. Symmetry – body in five-part pattern
- 13. – regrow lost body parts
- 14. – spiny-skinned ocean animal
- 16. – stays fixed in one place
- 17. – self-amputation defense
- 19. Canal – canal extending outward
- 21. Surface – side without mouth
- 22. – small skeletal plates
Down
- 1. canal – tube to ring canal
- 3. – water entry pore
- 4. Feet (Podia) – small suction limbs
- 5. – expel internal organs
- 7. Surface – side with mouth
- 9. – hard outer shell
- 10. Canal – circular central canal
- 11. – lives on ocean floor
- 12. Disk – middle body region
- 15. Digestion – digest food outside body
- 18. – internal body skeleton
- 20. Lantern – sea urchin jaw structure