Montipora incrassata

Montipora incrassata is a stony coral in the family Acroporidae, forming colonies typically encrusting or plate-like in growth form, characteristic of the genus's diverse morphological range. Like other scleractinian corals, it relies on symbiotic zooxanthellae for energy through photosynthesis while also capturing plankton with its polyps. As a reef-building species, it contributes to the physical structure of reef ecosystems, providing habitat complexity that supports fish and invertebrate communities.

The species occurs across a broad swath of the Indo-Pacific, with recorded populations in the Marshall Islands, Papua New Guinea, Solomon Islands, American Samoa, New Caledonia, Micronesia, Australia, Mauritius, Malaysia, Thailand, Vanuatu, Vietnam, the United States, Japan, Palau, and Fiji. It inhabits marine neritic zones, generally in shallow reef environments within this range.

Montipora incrassata is classified as Endangered, with a decreasing population trend. Threats include fishing and harvesting activities that damage reef substrate, recreational pressures such as diving and anchoring, disease and invasive species, and declining water quality from domestic and urban wastewater, agricultural runoff, and other pollution sources. Habitat shifting linked to broader environmental change compounds these pressures, along with impacts from non-timber crop cultivation in coastal watersheds.

Conservation efforts affecting this species are largely embedded within broader coral reef protection frameworks, including marine protected areas across parts of its range, regulation of coastal development and fishing practices, and international monitoring under IUCN Red List assessments that inform regional management priorities.

The species' outlook remains concerning given its Endangered status and the persistence of multiple simultaneous, ongoing threats across its wide but fragmented range, with no indication of population recovery.