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Caulastrea furcata

Dana, 1846

Colonies are phaceloid. Corallites diverge from the colony base, or are irregular, or crowded if space is restricted. They are less than 10 millimetres diameter. Septa are exsert and irregular, with some septa thicker than others. Polyps are fleshy; thick septa give prominent radiating stripes to the upper corallite surface.

Colour: Brown or green with green oral discs.

Habitat: Protected reef slopes where the substrate is partly sandy. Forms extensive single species stands, sometimes over 5 metres across.

Abundance: Common.

Similar species:

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Wijsman-Best (1972), Veron, Pichon and Wijsman-Best (1977). Additional identification guides: Veron (1986), Nishihira and Veron (1995).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Caulastrea furcata.  Great Barrier Reef, Australia.  A large colony with crowded corallites.  Charlie Veron.

Caulastrea furcata. Great Barrier Reef, Australia. A large colony with crowded corallites. Charlie Veron.

Caulastrea furcata.  Great Barrier Reef, Australia.  The neat appearance of a hemispherical colony.  Ed Lovell.

Caulastrea furcata. Great Barrier Reef, Australia. The neat appearance of a hemispherical colony. Ed Lovell.

Caulastrea furcata.  Great Barrier Reef, Australia.  Usual appearance of corallites with some septa forming radiating stripes.  Valerie Taylor.

Caulastrea furcata. Great Barrier Reef, Australia. Usual appearance of corallites with some septa forming radiating stripes. Valerie Taylor.

Caulastrea furcata.  Papua New Guinea.  Thick crowded corallites of a colony in a wave-washed environment.  Charlie Veron.

Caulastrea furcata. Papua New Guinea. Thick crowded corallites of a colony in a wave-washed environment. Charlie Veron.

Caulastrea furcata.  Great Barrier Reef, Australia.  Side view of corallites.  Valerie Taylor.

Caulastrea furcata. Great Barrier Reef, Australia. Side view of corallites. Valerie Taylor.

Caulastrea furcata.  Great Barrier Reef, Australia.  Showing corallites.

Caulastrea furcata. Great Barrier Reef, Australia. Showing corallites.

Caulastrea furcata.  Great Barrier Reef, Australia.  Showing branching pattern.

Caulastrea furcata. Great Barrier Reef, Australia. Showing branching pattern.

Caulastrea furcata.  Great Barrier Reef, Australia.  Showing corallites.

Caulastrea furcata. Great Barrier Reef, Australia. Showing corallites.

Caulastrea furcata.  Great Barrier Reef, Australia.  Showing branches.

Caulastrea furcata. Great Barrier Reef, Australia. Showing branches.

Caulastrea furcata.  Great Barrier Reef, Australia.  Showing corallites.

Caulastrea furcata. Great Barrier Reef, Australia. Showing corallites.