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Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Actiniaria
Glass anemone
Dofleinia sp.
Family Actiniidae
updated Nov 2019

Where seen? This beautiful anemone resembles blown glass and is sometimes seen on sand and near seagrasses on some of our shores.

Features: Diameter with tentacles extended 20cm or more. The oral disk 5-8cm in diameter. Tentacles not many. One ring of about 20 long tentacles (10-20cm), another ring of about the same number of shorter tentacles (length about the diameter of the oral disk). The transparent tentacles and oral disk are covered with tiny bumps that are white, sometimes reddish. In some, the bumps are densely grouped. There is a black-and-white ring on the base of the longer tentacles where they attach to the oral disk. The mouth is ringed by white spots. The body column is smooth almost transparent with regular wide smooth fluted ridges along the column length. It does not seem to have bumps (verrucae).

The Striped or Armed Anemone (Dofleinia armata) found in Australia is considered extremely dangerous as it can inflict painful stings that take months to heal.

Somtimes confused with the Rough anemone which has translucent tentacles with small brown spots, dark blotches on the oral disk and rows of white bumps on the body column.

Beting Bronok, Jun 10

Rings of long tentacles and short tentacles.

Beting Bronok, Aug 05

Beting Bronok, Jun 06

Glass anemones on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Changi Carpark 6, May 21
Photo shared by Jonathan Tan on facebook.
.Pulau Ubin, Dec 12
Photo shared by Loh Kok Sheng on flickr.

Caught a small fish!
Changi, Aug 19
Photo shared by Jianlin Liu on facebook.

Pulau Sekudu, Jul 20
Photo shared by Loh Kok Sheng on facebook.

Beting Bronok, Jun 18
Photo shared by Toh Chay Hoon on facebook.

East Coast Park (PCN), Aug 23
Photo shared by Kelvin Yong on facebook

East Coast Park (G), May 21
Photo shared by Toh Chay Hoon on facebook



  • Erhardt, Harry and Daniel Knop. 2005. Corals: Indo-Pacific Field Guide IKAN-Unterwasserachiv, Frankfurt. 305 pp.
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