| 11. | Coral polyps, small anemones, algae and invertebrates make up their diet.
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| 12. | However, most species feed on coral polyps and sea anemones.
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| 13. | The juveniles act as cleaner fish, while the adults primarily prey on coral polyps.
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| 14. | The discarded lines abrade coral polyps and upper tissue layers.
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| 15. | It subsists on a great variety of food including algae, coral polyps and bottom detritus.
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| 16. | It feeds on polychaetes, coral polyps, and algae.
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| 17. | To do this, they drill into the coral's limestone skeleton, killing coral polyps in the process.
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| 18. | It feeds on coral polyps and sea anemones.
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| 19. | Billions of living coral polyps are attached to the reef, so it's continuing to form _ naturally.
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| 20. | Gradual sea-level rise also allows for coral polyp activity to raise the atolls with the sea level.
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