Echinodermata

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