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Manicina areolata

(Linnaeus, 1758)

Colonies are either free-living or attached; the former have a cone-shaped undersurface. Small colonies are oval shaped and consist of a central axial valley with short side valleys. Larger colonies are hemispherical and meandroid. There is a conspicuous ambulacral groove along the tops of valley walls. Septa are thick and even.

Colour: Usually uniform pale orange-brown but may be a variety of browns, greys and greens with contrasting colours of valleys and walls.

Habitat: Subtidal seagrass beds where colonies are small and free-living, also shallow reef environments where colonies are attached and become hemispherical.

Abundance: Usually uncommon.

Similar species: Trachyphyllia geoffroyi

Taxonomic note: Source reference: Veron (2000). Taxonomic references: Roos (1971), Zlatarski and Estalella (1982), Cairns (1982). Additional identification guides: Colin (1978), Humann (1993).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Manicina areolata.  Caribbean.  A hemispherical colony. This is the most common colouration of colonies in shallow water.  Charlie Veron.

Manicina areolata.Caribbean.A hemispherical colony. This is the most common colouration of colonies in shallow water.Charlie Veron.

Manicina areolata.  Caribbean.  A free-living colony with an axial valley and short side valleys.  Paul Humann.

Manicina areolata.Caribbean.A free-living colony with an axial valley and short side valleys.Paul Humann.

Manicina areolata.  Caribbean.  Surface detail of valleys.  Charlie Veron.

Manicina areolata.Caribbean.Surface detail of valleys.Charlie Veron.

Manicina areolata.  Caribbean.  A juvenile colony with mouths forming.  Paul Humann.

Manicina areolata.Caribbean.A juvenile colony with mouths forming.Paul Humann.

Manicina areolata.  Caribbean.  Showing colony surface.

Manicina areolata.Caribbean.Showing colony surface.

Manicina areolata.  Caribbean.  Showing valleys.

Manicina areolata.Caribbean.Showing valleys.

Manicina areolata.  Caribbean.  Showing free-living colony.

Manicina areolata.Caribbean.Showing free-living colony.

Manicina areolata.  Caribbean.  Showing costae.

Manicina areolata.Caribbean.Showing costae.