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Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Ceriantharia
Shy glass cerianthid
awaiting identification*
updated Nov 2019
Where seen? This very small, almost invisible cerianthid is very shy and will disappear into its tube at the slightest sign of danger. Often only encountered at night, where in the light of a strong torch or camera flash, it wilts away into its tube. It is regularly encountered on many of our shores, on coral rubble.

Features: 6-8cm in diameter. The outer tentacles are very long and almost totally transparent. There is a black ring around the base of the long tentacle where it connects with the oral disk. The inner tentacles
are very short (less than 1cm long) and usually brownish. The body column is transparent sometimes with a beige, yellowish or brown tinge. The tube it lives in is often rather thick and lumpy.

Pulau Sekudu, Aug 06

Disappears into a rather lumpy tube.

Pulau Sekudu, May 04

Pulau Sekudu, Jun 04

Pulau Sekudu, Aug 04

*Species are difficult to positively identify without close examination.
On this website, the animals are grouped by external features for convenience of display.

Shy glass cerianthids on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Sisters Island, Oct 11
Photo shared by Rene Ong on facebook.

Pulau Tekukor, May 10
Photo shared by Loh Kok Sheng on his blog.

Terumbu Bemban, Jul 11

Photo shared by Loh Kok Sheng on his blog.

Pulau Salu, Aug 10

Pulau Salu, Aug 10
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