hard corals text index | photo index
Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Scleractinia > Family Faviidae
Smooth hexagonal corals
awaiting identification *
Family Merulinidae
updated Nov 2019
Where seen? This hard coral is seen on many of our shores

Features: Colonies 20-30cm, usually irregular dome-shaped. Corallites hexagonal (1cm) with a smooth surface in between the corallites. Often seen with tentacles extended. Colours brown, blue and green, smooth surface usually a pale colour, sometimes with polyp centres in a contrasting colour.

Some species of corals recorded for Singapore that have these patterns include: Leptastrea purpurea. It's hard to distinguish them without close examination of small features and they are grouped here by large external features for convenience of display.

Sometimes confused with Neat hexa corals
(Pseudosiderastrea tayamai) which belong to Family Siderastreidae.

Sentosa, Jul 05

Tuas, Jul 06

Sentosa, Nov 05

Terumbu Raya, Jul 11

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

Smooth hexagonal corals on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Sentosa Serapong, May 12
Photo shared by Loh Kok Sheng on flickr.

Terumbu Pempang Laut, Aug 16
Photo shared by Marcus Ng on flickr.

Terumbu Salu, Jan 10
links | references | about | email Ria
Spot errors? Have a question? Want to share your sightings? email Ria I'll be glad to hear from you!
wildfactsheets website©ria tan 2008