Acropora dominates many branching coral thickets on the Great Barrier Reef.
Acropora is a large genus of reef-building stony corals that includes branching, table-shaped, and other growth forms. Its rapid growth can create complex three-dimensional habitat for reef fish and invertebrates, making it an important structural coral in many shallow environments.
The genus is not equally dominant everywhere. Local conditions, depth, wave exposure, water quality, storms, disease, and heat stress influence which coral groups thrive. Some Acropora colonies can grow quickly, but their delicate branches may be vulnerable to physical damage.
Acropora is a genus, not a single species. That distinction matters because the Great Barrier Reef contains many Acropora species with different shapes, habitats, and responses to environmental stress.