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Hermatypic corals are those corals in the order Scleractinia which build reefs by depositing hard calcareous material for their skeletons, forming the stony framework of the reef. Corals that do not contribute to coral reef development are referred to as ahermatypic (non-reef-building) species.

Many reef-forming corals contain symbiotic photosynthetic zooxanthellae, which contribute to their nutritional needs. The term "hermatypic" is sometimes misused, being assumed to apply to all zooxanthellate corals. However, there are zooxanthellae in many non reef-forming corals; and not all hermatypic corals in shallow water contain zooxanthellae. Further, some hermatypic corals live at depths to which light cannot penetrate; they form deep-water reefs but do not harbour the symbionts.

References

1. Schuhmacher, H., Zibrowius, H. (2006). "What is hermatypic?". Coral Reefs. 4: 1–9. doi:10.1007/BF00302198. S2CID 34909110.{{cite journal}}: CS1 maint: multiple names: authors list (link)

v t e Corals and coral reefs
Hexacorallia	Black Brain Elegance Hermatypic Chalice Pillar Table Elkhorn Staghorn †Rugose †Tabulate
Octocorallia	Bamboo Blue Organ pipe Sea fans Sea pens
Coral reefs	Atoll Cay Coral Deep-water coral mesophotic coral reef Fringing Microatoll Coral reef fish Census of Coral Reefs The Structure and Distribution of Coral Reefs Catlin Seaview Survey Spur and groove formation
Coral regions	List of reefs African coral reefs Amazon Reef Andros, Bahamas Apo Reef Baa Atoll Belize Barrier Reef Coral Sea Islands Coral Triangle East African coral coast Florida Keys National Marine Sanctuary Great Barrier Reef India Jamaica Kiribati Lakshadweep Maldives Mesoamerican Barrier Reef System New Caledonia barrier reef Ningaloo Reef Non-tropical regions Northwestern Hawaiian Islands Pulley Ridge Raja Ampat Islands Red Sea Solomon Archipelago Southeast Asian coral reefs Tuvalu Archipelago Virgin Islands Yabiji
Coral diseases	Coral bleaching Black band disease Skeletal eroding band Stony coral tissue loss disease White band disease White pox disease
Conservation	Environmental issues with coral reefs Coral reef protection Coral reef restoration Reef resilience Organizations Coral Reef Alliance Green Fins International Coral Reef Society Project AWARE Reef Ball Reef Check
Symbiotic algae	Zooxanthellae Amphidinium Symbiodinium
Other	Artificial reef Aquaculture of coral Coral dermatitis Precious coral Coral rag Coral sand Coralline algae Deep-water coral Fire coral

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