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Porites lobata

Dana, 1846

Colonies are usually hemispherical or helmet-shaped and may be over 4 metres across. They commonly form ?micro-atolls? in intertidal habitats. The surface is usually smooth.

Colour: Usually cream or pale brown but may be bright blue, purple or green in shallow water.

Habitat: Frequently a dominant species of back reef margins, lagoons and some fringing reefs.

Abundance: Probably the most common Porites.

Similar species:

Taxonomic note: Taxonomic note: This species is divisible into several smaller semi-distinct taxonomic units. Source reference: Veron (2000). Taxonomic references: Wells (1954), Veron and Pichon (1982). Additional identification guides: Veron (1986), Sheppard and Sheppard (1991), Nishihira and Veron (1995).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Porites lobata.  Great Barrier Reef, Australia.  This species commonly forms helmet-shaped colonies with lobed upper surfaces.  Peter Isdale.

Porites lobata. Great Barrier Reef, Australia. This species commonly forms helmet-shaped colonies with lobed upper surfaces. Peter Isdale.

Porites lobata.  Great Barrier Reef, Australia.  An intertidal

Porites lobata. Great Barrier Reef, Australia. An intertidal 'micro-atoll'. Ed Lovell.

Porites lobata.  Far eastern Pacific islands.  An unusual growth-form in a shallow turbulent habitat.  Charlie Veron.

Porites lobata. Far eastern Pacific islands. An unusual growth-form in a shallow turbulent habitat. Charlie Veron.

Porites lobata.  Red Sea.  A massive colony.  Mary Stafford-Smith.

Porites lobata. Red Sea. A massive colony. Mary Stafford-Smith.

Porites lobata.  Great Barrier Reef, Australia.  Corallites are open and have relatively few skeletal elements.  Ed Lovell.

Porites lobata. Great Barrier Reef, Australia. Corallites are open and have relatively few skeletal elements. Ed Lovell.

Porites lobata. Diagram showing corallite characters.   .

Porites lobata. Diagram showing corallite characters. .

Porites lobata.  Great Barrier Reef, Australia.  Showing corallites of shaded colony.

Porites lobata. Great Barrier Reef, Australia. Showing corallites of shaded colony.

Porites lobata.  Great Barrier Reef, Australia.  Showing typical corallite structure.

Porites lobata. Great Barrier Reef, Australia. Showing typical corallite structure.

Porites lobata.  Great Barrier Reef, Australia.  Showing corallites of exposed colony.

Porites lobata. Great Barrier Reef, Australia. Showing corallites of exposed colony.

Porites lobata.  Great Barrier Reef, Australia.  Showing colony surface.

Porites lobata. Great Barrier Reef, Australia. Showing colony surface.

Porites lobata.  Great Barrier Reef, Australia.  Showing colony surface.

Porites lobata. Great Barrier Reef, Australia. Showing colony surface.

Porites lobata.  Great Barrier Reef, Australia.  Showing corallites.

Porites lobata. Great Barrier Reef, Australia. Showing corallites.