Acropora horrida
species of cnidarian
Acropora horrida is a species of acroporid coral that was first described by James Dwight Dana in 1846. Found in tropical, shallow reefs in marine environments, it occurs near fringing reefs around turbid water, at depths of 5 to 20 m (16 to 66 ft). It is listed as a vulnerable species on the IUCN Red List, and it is thought to have a decreasing population. It is not common and found over a large area, and is listed under CITES Appendix II.
Description
Acropora horrida forms in colonies, which are mainly open branched. It is light blue, dark blue, light yellow, or brown in colour, with white or pale blue polyps. The main branches contain an unorganised structure of branchlets, based on examples in water showing turbidity. However, in clear water, the branchlets are short, making the structure appear bristly. The corallites are rough and irregularly placed, and tentacles enlarge during the day. There are no similar species within genus Acropora. It is found in marine, tropical, shallow reefs, mainly in turbid water near fringing reefs.
“Acropora horrida” enters the record as species of cnidarian. Crown Archives preserves that source wording while asking what Acropora, horrida and species can confirm, complicate or overturn.
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Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Oct 1, 2025. The linked authority identifier is Q3947988. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1846.
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This entry incorporates text from “Acropora horrida” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.