Across
- 3. Considered grazers
- 4. Network of water vessels in body
- 7. Top surface of the body
- 10. Internal skeleton
- 11. Sea stars
- 13. Sea urchins and sand dollars
- 14. Distinct central disk with snake like arms
Down
- 1. Lower surface of body where the mouth is located
- 2. Brittle stars
- 5. Multiple arms radiating from central disk
- 6. Considered deposit feeders
- 8. No arms
- 9. All echinoderms exhibit this
- 12. Network of nerves
- 15. Used to grip surfaces and move the organism