under the sea

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Across
  1. 1. to enable echinoderms to move and get food
  2. 5. most echinoderms reproduce
  3. 6. burrow into rocky areas
  4. 8. small muscular tubes
  5. 9. aid in catching food
  6. 10. consists of calcium carbonate
Down
  1. 2. filters organic particles
  2. 3. grows lost body parts back
  3. 4. excretion occurs by
  4. 7. most brittle stars have five