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Goniopora somaliensis

Vaughan, 1907

Colonies are thick or thin encrusting plates, sometimes over 2 metres across, with shallow calices forming a smooth surface. Corallites are 3-5 millimetres diameter. Polyps are short, giving colonies a carpet-like appearance, but are often retracted during the day.

Colour: Usually grey or brown, often with polyps and surrounding tissue of contrasting colour.

Habitat: Sheltered reef environments, especially beneath overhangs.

Abundance: Uncommon but conspicuous.

Similar species: Alveopora spongiosa , Goniopora polyformis

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Wells (1954), Veron and Pichon (1982). Additional identification guides: Randall and Myers (1983), Veron (1986), Sheppard and Sheppard (1991), Nishihira and Veron (1995).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Goniopora somaliensis.  Madagascar.  Large lobed colonies are distinctive. When polyps are extended, these resemble colonies of Alveopora spongiosa more then any other Goniopora species.  Charlie Veron.

Goniopora somaliensis.Madagascar.Large lobed colonies are distinctive. When polyps are extended, these resemble colonies of Alveopora spongiosa more then any other Goniopora species.Charlie Veron.

Goniopora somaliensis.  Philippines.  Colonies frequently have polyps partly retracted and are pale brown in colour.  Charlie Veron.

Goniopora somaliensis.Philippines.Colonies frequently have polyps partly retracted and are pale brown in colour.Charlie Veron.

Goniopora somaliensis.  Vietnam.  Small lobed colonies such as this are distinctive.  Charlie Veron.

Goniopora somaliensis.Vietnam.Small lobed colonies such as this are distinctive.Charlie Veron.

Goniopora somaliensis.  Red Sea.  Showing the progressive retraction of polyps after touching the lower part of the colony. This causes a major colour change.  Charlie Veron.

Goniopora somaliensis.Red Sea.Showing the progressive retraction of polyps after touching the lower part of the colony. This causes a major colour change.Charlie Veron.

Goniopora somaliensis.  Tanzania.  Detail of extended polyps.  Charlie Veron.

Goniopora somaliensis.Tanzania.Detail of extended polyps.Charlie Veron.

Goniopora somaliensis.  Madagascar.  Large lobed colonies are distinctive. When polyps are extended, these resemble colonies of Alveopora spongiosa more then any other Goniopora species.  Charlie Veron.

Goniopora somaliensis.Madagascar.Large lobed colonies are distinctive. When polyps are extended, these resemble colonies of Alveopora spongiosa more then any other Goniopora species.Charlie Veron.

Goniopora somaliensis.  Red Sea.  Showing colony surface.

Goniopora somaliensis.Red Sea.Showing colony surface.

Goniopora somaliensis.  Great Barrier Reef, Australia.  Showing corallites.

Goniopora somaliensis.Great Barrier Reef, Australia.Showing corallites.

Goniopora somaliensis.  Great Barrier Reef, Australia.  Showing corallites.

Goniopora somaliensis.Great Barrier Reef, Australia.Showing corallites.

Goniopora somaliensis.  Great Barrier Reef, Australia.  Showing corallites.

Goniopora somaliensis.Great Barrier Reef, Australia.Showing corallites.

Goniopora somaliensis.  Great Barrier Reef, Australia.  Showing branching pattern.

Goniopora somaliensis.Great Barrier Reef, Australia.Showing branching pattern.