Phylum Cnidaria > Class Anthozoa > Subclass Alcyonaria/Octocorallia > Order Gorgonacea
Skinny sea fans
Astrogorgia sp.*
Family Plexauridae
updated Oct 2016

Where seen? This sea fan with long, skinny branches are sometimes seen in numbers on our Northern shores, including Changi and even the East Coast. On coral rubble, rocks, stones and in sand.

Features: 10-20cm long. Generally with long branches without much side branching. In some colonies, the long branches are neatly and evenly spaced along the central stem on one plane so the whole colony looks like the veins of a leaf. But in some large colonies, the long branches are tangled. Stems long, skinny and somewhat flattened often with a ridge 'mid-rib' along the centre of the stem. Colours seen include red, maroon, orange and yellow. The white polyps are relatively large (0.5cm) compared to the stem and emerge on opposite edges of the flattened stems.

Those seen on our shores often have all kinds of small animals clinging onto to them including tiny colourful brittle stars, transparent shrimps and ovulid snails.

East Coast, Jun 06


Changi, Jul 09

Beting Bronok, Jul 13

Beting Bronok, Jul 13

Chek Jawa, Jul 05


Tiny colourful brittle stars.
Changi, Jun 12

Red flatworm?
East Coast, Dec 08

Ovulid snails
East Coast, Jun 06

*
Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display
.
Skinny sea fans on Singapore Shores

Photos of Skinny sea fans for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Tanah Merah, Dec 09
Photo shared by Loh Kok Sheng on his blog.

Tanah Merah Ferry Terminal, Jun 15
Photo shared by Loh Kok Sheng on facebook.


East Coast Park, Jul 09
Photo shared by Loh Kok Sheng on his blog.

East Coast PCN, Apr 17
Photo shared by Loh Kok Sheng on facebook.

Links

References

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