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Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Ceriantharia
Shy glass cerianthid
awaiting identification*
updated Aug 10
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 it wilts away into its tube in the light of a strong torch or camera flash. 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.

Pulau Sekudu, Aug 06
The body column is transparent sometimes with a beige, yellowish or brown tinge. The tube it lives in is often rather thick and lumpy.

Disappears into a rather lumpy tube.

Shy glass cerianthids on Singapore shores


Pulau Sekudu, May 04

Pulau Sekudu, Jun 04

Pulau Sekudu, Aug 04

more photos of shy glass cerianthids on Singapore shores
northern shores
southern shores part 1 | part 2

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

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