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Tongue
mushroom coral
Herpolitha limax*
Family Fungiidae
updated
Oct 2016
Where
seen? This long, often tongue-shaped mushroom hard coral
is sometimes seen on many of our Southern shores. This coral is free-living
as an adult (it is not attached to the surface) and large ones may
be seen on in coral rubble and among living corals.
Features: Skeleton longer than
broad, 20-30cm long with rounded ends, though some may have rather
pointed ends. Comes in a wide variety of shapes from long and narrow,
oval to circular, flat or rather humped, also bomerang shaped. Specimens
in T-, Y- or X- shapes are also seen. This is generally due to regeneration
following damage.
A prominent central furrow. Upper surface with thin lines radiating
from the central furrow. Lines are parallel, discontinuous with sparse,
fine 'teeth' that usually can't be seen in the field. The underside
usually concave, some with radiating lines of short bumps.
Veron considers it to be a colonial animal with many mouths. Numerous
mouths are found in the central furrow and mouths may also be found
elsewhere on the upper surface. The sparse 'tentacles' are short,
slender and usually transparent, often white-tipped. These are not
true tentacles but inflated portions of the tissues. These are only
'extended' at night. Colours seen include light blue, green and purple..
Sometimes confused with other
long mushroom corals. Here's more on how to tell
apart elongated mushroom hard corals.
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Distinct central furrow.
Pulau Hantu, Feb 08 |
Tiny tentacles |
Many mouths |
Underside concave.
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Kusu Island, Jun 04
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Thin overlapping discontinuous walls.
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Tiny tentacles
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Pulau Tekukor,
May 07
Underside
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Terumbu Raya,
Jun 11
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Raffles Lighthouse,
Jul 06
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*Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of
display.
Tongue
mushroom corals on Singapore shores |
Other sightings on Singapore shores |
Tanah Merah Ferry Terminal, Jun 22
Photo
shared by Vincent Choo on facebook. |
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East Coast PCN, Jul 20
Photo
shared by Loh Kok Sheng on facebook. |
Sentosa Serapong, May 24
Photo shared by Loh Kok Sheng on facebook. |
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South Cyrene, Oct 10
Photo
shared by Loh Kok Sheng on flickr.
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Big SIsters Island, Feb 22
Photo
shared by Loh Kok Sheng on facebook. |
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Terumbu Bemban,
Jun 10
Photo
shared by Loh Kok Sheng on his
flickr. |
Terumbu Pempang
Darat, Jun 10
Photo
shared by James Koh on his
blog. |
Terumbu Semakau,
Jun 10
Photo shared by Loh Kok Sheng on his
flickr. |
Pulau Salu, Apr 21
Photo shared by Loh Kok Sheng on facebook. |
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Terumbu Salu,
Jan 10
Photo
shared by Loh Kok Sheng on his flickr |
Terumbu Berkas,
Jan 10
Photo
shared by Loh Kok Sheng on his flickr |
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Links
References
- Hoeksema,
Bert W. and Esther G. L. Koh. 30 Dec 2009. Depauration
of the mushroom coral fauna (Fungiidae) of Singapore (1860s-2006)
in changing reef conditions (pdf). Raffles Bulletin of
Zoology Supplement No. 22: 91-101.
- Danwei Huang,
Karenne P. P. Tun, L. M Chou and Peter A. Todd. 30 Dec 2009. An
inventory of zooxanthellate sclerectinian corals in Singapore
including 33 new records
- Veron, Jen.
2000. Corals
of the World Australian Institute of Marine Science, Australia. 3 volumes.
- Erhardt,
Harry and Daniel Knop. 2005. Corals:
Indo-Pacific Field Guide IKAN-Unterwasserachiv, Frankfurt. 305 pp.
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