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Euphyllia yaeyamaensis

(Shirai, 1980)

Colonies are phaceloid with corallites circular or flabello-meandroid with short valleys. Valleys are up to 40 millimetres wide. Corallite walls are sharp edged. Septa are closely compacted. There are no columellae. Tentacles are short and fleshy and covered with short uniform branchlets, each with a terminal knob. They are aligned radially to polyp centres and can retract, but only slowly.

Colour: Usually a distinctive purple-grey, sometimes greenish-grey, occasionally translucent. Branchlets sometimes have pale tips.

Habitat: Shallow reef environments.

Abundance: Uncommon.

Similar species: Euphyllia divisa

Taxonomic note: Source reference: Veron (2000). Taxonomic reference: Shirai (1980). Additional identification guide: Nishihira and Veron (1995).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Euphyllia yaeyamaensis.  Philippines.  Slightly retracted tentacles reveal the underlying phaceloid shape of the colony.  Charlie Veron.

Euphyllia yaeyamaensis.Philippines.Slightly retracted tentacles reveal the underlying phaceloid shape of the colony.Charlie Veron.

Euphyllia yaeyamaensis.  Ryukyu Islands, Japan.  Common colour variants in the fleshy tentacles.  Charlie Veron.

Euphyllia yaeyamaensis.Ryukyu Islands, Japan.Common colour variants in the fleshy tentacles.Charlie Veron.

Euphyllia yaeyamaensis.  Ryukyu Islands, Japan.  Common colour variants in the fleshy tentacles.  Charlie Veron.

Euphyllia yaeyamaensis.Ryukyu Islands, Japan.Common colour variants in the fleshy tentacles.Charlie Veron.

Euphyllia yaeyamaensis.  Ryukyu Islands, Japan.  Showing branches.

Euphyllia yaeyamaensis.Ryukyu Islands, Japan.Showing branches.

Euphyllia yaeyamaensis.  Ryukyu Islands, Japan.  Showing valleys.

Euphyllia yaeyamaensis.Ryukyu Islands, Japan.Showing valleys.

Euphyllia yaeyamaensis.  Ryukyu Islands, Japan.  Showing corallites.

Euphyllia yaeyamaensis.Ryukyu Islands, Japan.Showing corallites.