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Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Ceriantharia
Black-mouth cerianthid
awaiting identification*
updated Mar 2020

Where seen? This rather large cerianthid with a dark centre and neon inner tentacles is sometimes seen on some of our shores. Among coral rubble, near seagrasses.

Features: 12-15cm in diameter. The very long tapering outer tentacles are transparent to pale white or beige. In some, the pale outer tentacles have fine darker stripes. The 'mouth' is very dark brown to black while the short inner tentacles are usually a pale neon green. Body column black.

Pulau Semakau, Apr 08

Fine stripes on outer tentacles.

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

Black-mouth cerianthids on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


Beting Bronok, Jun 16
Photo shared by Loh Kok Sheng on flickr.

Sentosa, Feb 08
Photo shared by Loh Kok Sheng on his blog.

Cyrene Reef, Jul 10
Photo shared by Loh Kok Sheng on his flickr.


Pulau Semakau South, Oct 18
Photo shared by Jianlin Liu on facebook.

Terumbu Semakau, May 10
Photo shared by James Koh on his blog.


Beting Bemban Besar, Apr 17
Photo shared by Russel Low on facebook.

Beting Bemban Besar, Mar 20
Photo shared by Marcus Ng on facebook.

Pulau Biola, Dec 09
Photo shared by Loh Kok Sheng on his flickr.
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