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Published byAlexandra Knight Modified over 8 years ago
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Sea Anemones Corals Polyps
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Corals Reef building corals are hermatypic, meaning they are mound builders. Bodies contain masses of single-celled, symbiotic dinoflagellates called zoozanthellae, which carry on photosynthesis, absorb waste products, grow, and divide within the coral host. Coral polyps provide dinoflagellates with a safe and stable environment, carbon dioxide, and nutrients. Zooxanthellae provide oxygen, carbohydrates, and pH necessary to deposit calcite. Also give corals their color.
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Coral Morphology
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Corals Reefs grow in the photic zone Depend on light and warmth Grow best in brightly lit water of about 5 to 10 meters (16-33 feet) deep. Prefer clear water with little sediment Coral polyps can also retract into their shells to escape strong sunlight and predators. Exposure to fresh water is fatal
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