hard corals text index | photo index
Phylum Cnidaria > Class Anthozoa > Subclass Zoantharia/Hexacorallia > Order Scleractinia > Family Faviidae
Honey-comb hexagonal corals
awaiting identification *
Family Merulinidae
updated Nov 2019
Where seen? Hard corals with large hexagonal corallites are sometimes seen on some of our shores.

Features: Colonies seen 10-20cm, generally boulder-shaped, but somewhat irregular and not perfectly spherical. The corallites large (1-2cm) have shared walls and form large irregular cells with sharp angular edges of various sizes and shapes. The walls are thin and tall, corallites are more tubular with a broad 'base'. The result is a rather irregular pattern of large polygons that resembles a honey comb. The polyps are large and fleshy with a ring of many tentacles around a large oral disk. Colony colours seen include brown, yellow, blue and purple.

Some species of corals recorded for Singapore that have these patterns include: Favites, Goniastrea and Leptastrea species.
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.

Sometime confused with Neat hexa corals (Pseudosiderastrea tayami) which has more conical corallites with a narrow 'base'.
Another coral with honeycomb shaped corallites is Gardineroseris planulata of Family Agariciidae.

Pulau Hantu, May 05

Sentosa, Oct 03

Pulau Hantu, May 05

Cyrene Reef, Jun 08

Pulau Semakau, Apr 08

Sentosa, May 07

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

Honey-comb hexagonal corals on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Terumbu Berkas, Jan 10

Pulau Senang, Jun 10

Pulau Salu, Jun 10

Pulau Salu, Jun 10

Pulau Salu, Jun 10

Pulau Berkas, May 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