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Broad
feathery soft coral
awaiting identification*
Family Xeniidae
updated
Feb 11
Where
seen? Growing on small stones, this colony of tiny animals
is often overlooked. However, they are commonly seen on many of our
Southern shores. Near the mid-water mark, on rocky shores and among
coral rubble.
Features: Colony about 5-10cm
in area. Only one kind of polyp (autozooids) emerging from a thin
soft common membrane which can also be ribbon-like (stolons) although
this is usually hidden under sand and sediment. Polyps 1cm in diameter,
on stalks about 1-2cm long. The eight tentacles are broad and have
many thick side branches (pinnules) arranged in 1 to 4 rows along
both edges of each tentacle. Some have long tentacles, in others the
tentacles are shorter. Polyps from beige, pink, pale powder blue to
bright blue, the entire animal the same colour. The tiny polyps don't
retract completely into the common tissue, and don't pulsate.
Soft corals with this form include Anthelia and Sansibia
of the Family Xeniidae. |
St. John's
Island, Aug 05

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Pulau Salu, Aug 10
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Polyps do not retract completely.
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Broad
feathery soft corals on Singapore shores

Sisters Islands, Jan 07

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St.
John's Island, Jun 07

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Sisters Islands, Jul 04

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more photos of broad feathery soft corals on Singapore shores
part 1 | part 2
| part 3 | part 4
| part 5 | part 6
*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience
of display
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References
- Fabricius,
Katharina and Philip Alderslade, 2001. Soft
Corals and Sea Fans
.
Australian Institute of Marine Science and the Museum and
Art Gallery of the Northern Territoriy. 264 pp.
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