Knowra Brain coral Brain coral Brain coral is a common name for reef-building corals in several genera whose grooved, folded colonies resemble a brain. Their hard skeletons are built by colonies of tiny coral polyps.
Coral polyp : A small marine animal that secretes a skeleton and forms part of a coral colony. Each brain-coral colony is formed by many polyps sharing a continuous skeleton.
Coral calcification : The biological process by which corals produce calcium-carbonate skeletons. Repeated calcification by polyps creates the ridges and valleys characteristic of brain-coral colonies.
Reef fish : Fish species that live in or depend on coral reef ecosystems. The complex folds of brain-coral colonies provide shelter and feeding sites for reef animals.
Meandroid coral : A coral growth form with long, winding valleys shared by rows of polyps. Brain corals commonly show this winding valley pattern, though the name covers varied forms.
Coral colony : A group of genetically connected coral polyps living together, often joined by shared tissue. The brain-like surface belongs to a colony, not a single coral animal.
Coral growth forms : The diverse colony shapes corals develop, including branching, massive, and plate-like forms. Brain corals form massive, folded colonies rather than delicate branching structures.
Coastal protection : The reduction of wave energy and erosion by natural or engineered barriers along shorelines. Brain-coral structures add roughness and height to reefs that weaken incoming waves.
Faviidae : A family of reef-building corals historically containing many massive, brain-shaped species. Several familiar brain corals were traditionally grouped in this family, but classification has changed.
Zooxanthellae : Photosynthetic dinoflagellates that live symbiotically within the tissues of many corals. These symbionts supply much of the energy that supports brain-coral growth.
Coral feeding : The capture and digestion of food by coral polyps, supplemented in many species by photosynthesis from symbionts. Polyps can capture plankton and dissolved food while symbiotic algae provide additional energy.
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