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Acropora irregularis

(Brook, 1892)

Colonies are primarily composed of highly fused horizontal branches. These may form tables over 3 metres across or plates with a side attachment. Central parts of colonies may be almost solid. Most colonies, especially peripheral parts, are open branched. There may be few, if any, upturned branches. Corallites are irregular in length and tubular to rasp-like.

Colour: Usually grey.

Habitat: Shallow reef environments exposed to strong wave action.

Abundance: Sometimes common, especially in the western Indian Ocean.

Similar species: Acropora abrotanoides , Acropora pinguis , Acropora robusta

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Pillai and Scheer (1976), Wallace (1999, as A. sukarnoi).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Acropora irregularis.  Madagascar.  Large colony of flat plates.  Charlie Veron.

Acropora irregularis.Madagascar.Large colony of flat plates.Charlie Veron.

Acropora irregularis.  Ryukyu Islands, Japan.  Flattened branches forming tiers.  Charlie Veron.

Acropora irregularis.Ryukyu Islands, Japan.Flattened branches forming tiers.Charlie Veron.

Acropora irregularis.  Madagascar.  Colony of twisted branches.  Charlie Veron.

Acropora irregularis.Madagascar.Colony of twisted branches.Charlie Veron.

Acropora irregularis.  Madagascar.  Colony of flattened branches.  Charlie Veron.

Acropora irregularis.Madagascar.Colony of flattened branches.Charlie Veron.

Acropora irregularis.  Madagascar.  Surface detail of a horizontal plate.  Charlie Veron.

Acropora irregularis.Madagascar.Surface detail of a horizontal plate.Charlie Veron.

Acropora irregularis.  Indonesia.  Showing corallites.

Acropora irregularis.Indonesia.Showing corallites.

Acropora irregularis.  Indonesia.  Showing branching pattern.

Acropora irregularis.Indonesia.Showing branching pattern.

Acropora irregularis.  Indonesia.  Showing branch tips.

Acropora irregularis.Indonesia.Showing branch tips.

Acropora irregularis.  Indonesia.  Showing corallites.

Acropora irregularis.Indonesia.Showing corallites.