Colourful Corals

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Across
  1. 4. Huge groups where corals live together
  2. 5. we must ______ our coral reefs
  3. 7. Corals are home to 4000 types of fish and ____
  4. 8. polyps use their ____ to catch food
  5. 10. coral reefs are _______
Down
  1. 1. _____ use reefs to discover new medicines
  2. 2. Some corals are _______ of years old
  3. 3. Some coral build a protective _____ around them
  4. 4. coral reefs provide food for ______
  5. 6. some polyps live in warm sunlight_______
  6. 9. polyps get food from plants called________