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Echinopora horrida

Dana, 1846

Colonies are composed of contorted branches, sometimes with flat laminar bases. Stands over 5 metres across and one metre high are not unusual. Corallites are 4-6 millimetres diameter, thick walled and have six thick primary septa. The coenosteum is covered with tall spinules.

Colour: Dark brown, cream or green.

Habitat: Forms large stands on protected horizontal substrates including shallow reefs and lagoons.

Abundance: Uncommon.

Similar species:

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Chevalier (1975), Veron, Pichon and Wijsman-Best (1977). Additional identification guide: Veron (1986).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Echinopora horrida.  Papua New Guinea.  Typical appearance of a thicket.  Charlie Veron.

Echinopora horrida.Papua New Guinea.Typical appearance of a thicket.Charlie Veron.

Echinopora horrida.  Great Barrier Reef, Australia.  Contorted branches. Polyps are partly extended.  Charlie Veron.

Echinopora horrida.Great Barrier Reef, Australia.Contorted branches. Polyps are partly extended.Charlie Veron.

Echinopora horrida.  Papua New Guinea.  Branch tips of a compact colony.  Neville Coleman.

Echinopora horrida.Papua New Guinea.Branch tips of a compact colony.Neville Coleman.

Echinopora horrida.  Great Barrier Reef, Australia.  Showing corallites.

Echinopora horrida.Great Barrier Reef, Australia.Showing corallites.

Echinopora horrida.  Great Barrier Reef, Australia.  Showing corallites on branch.

Echinopora horrida.Great Barrier Reef, Australia.Showing corallites on branch.

Echinopora horrida.  Great Barrier Reef, Australia.  Showing corallite detail.

Echinopora horrida.Great Barrier Reef, Australia.Showing corallite detail.

Echinopora horrida.  Great Barrier Reef, Australia.  Showing branches.

Echinopora horrida.Great Barrier Reef, Australia.Showing branches.

Echinopora horrida.  Great Barrier Reef, Australia.  Showing both plate and branches.

Echinopora horrida.Great Barrier Reef, Australia.Showing both plate and branches.