Coral Reefs

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This puzzle tests your knowledge of terms associated with coral reefs.
Crossword Hints
  1. Coral reefs are built by tiny creatures called coral _________.
  2. Coral reefs are composed mainly of calcium __________.
  3. A __________ reef is found close to the shore.
  4. A __________ reef may be several kilometers from the shore.
  5. The world's largest barrier reef is found off the coast of ___________.
  6. In the Caribbean, a barrier reef is found off the coast of _________.
  7. Most coral grows in relatively ___________ water.
  8. Most types of coral thrive in _______ water.
  9. Coral will not grow where large amounts of _________ water pours into the sea.