Acropora divaricata

Acropora divaricata is a stony coral belonging to the family Acroporidae, distinguished by its arborescent to corymbose growth form, with branches that give rise to fine, tapering branchlets. Colonies build calcium carbonate skeletons that create three-dimensional reef structure, providing shelter and habitat for fish and invertebrates. Like other Acropora species, it is a fast-growing hard coral that relies on a symbiotic relationship with photosynthetic algae (zooxanthellae) housed within its tissues for the majority of its nutritional needs, supplementing this through the capture of plankton with its polyps.

The species occurs across the Indo-Pacific, with recorded populations in Australia, Japan, Taiwan, China, Vietnam, India, Palau, Kiribati, the Cook Islands, and French Polynesia. It inhabits shallow marine neritic zones, typically on reef flats and slopes exposed to varying degrees of wave action.

The species faces numerous ongoing pressures, including fishing and harvesting activity, recreational use of reef habitats, and coral diseases exacerbated by native and invasive species. Land-based pollution from urban wastewater and agricultural runoff degrades water quality, while storms and flooding cause physical damage to colonies. Habitat alteration and shifting environmental conditions, linked to broader climate impacts, add further strain, and fire and land-use activity in adjacent watersheds contribute indirect effects on coastal water quality.

Conservation efforts include its listing under CITES Appendix II, inclusion in marine protected areas across parts of its range, and reef monitoring programs tracking coral cover and bleaching events. Restoration initiatives involving coral fragment propagation are underway in several countries.

The population trend is decreasing, and the species is classified as Endangered. Its dependence on stable water quality and temperature conditions makes its long-term outlook closely tied to the trajectory of broader reef ecosystem health.