| 21. | A Biorock Coral Reef Restoration Program has been implemented since 2006.
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| 22. | The coral reef ecosystem forms part of the Coral Triangle region.
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| 23. | Its coral reef covers a concentrated part of the western littoral.
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| 24. | The hourlong tours from three islands cruise past coral reefs and sunken ships.
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| 25. | It is known for its coral reefs and recreational scuba diving.
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| 26. | The whole atoll is surrounded by an almost continuous coral reef.
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| 27. | Coral reef fish can be particularly colourful and interesting to watch.
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| 28. | Coral reefs in the Pacific have not recovered from amphibious landings.
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| 29. | Another example has to do with coral reefs and marine ecosystems.
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| 30. | NOAA coral reefs : http : / / coris . noaa . gov
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