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Diving with Honeycomb Corals

Koh Lanta Marine Life | Diploastreidae
Pencil SquidsMushroom Corals

Divers can find many colonies of honeycomb corals at the dive sites around Koh Lanta, some growing to enormous sizes.

The family of honeycomb corals, Diploastreidae contains only a single genus, Diploastrea, which in turn has only a single member species, Diploastrea heliopora.

1 species found on this page.

Honeycomb Coral

(Diploastrea heliopora)

Honeycomb coral colonies are easy to distinguish from other coral species, and can grow to massive sizes, creating dense colonies several meters wide. Many coral species have some variation depending on depth, location, water clarity, etc., however this species has very little variation and is easy to identify.

Honeycomb coral (Diploastrea heliopora)

Diploastrea heliopora @ Koh Haa

The large polyps live within corallites which are low, dome-shaped and closely packed, creating a honeycomb-like effect.

The corallite walls are thick, but not solid, rather they are formed of ridges which are the enlarged outer ends of the septa. The septa are equal and are thick at the wall and thin where joining the columellae (top/opening of the corallite).

Honeycomb coral (Diploastrea heliopora)

Honeycomb coral @ Koh Bida

The coral surface appears smooth and can be cream, grey, light brown or green. This is a zooxanthellate species.

Koh Lanta Diving with Honeycomb Corals

If you'd love a chance to spot Honeycomb Corals on one of our daily Koh Lanta diving trips then send us an email to info@diveandrelax.com.

Join our high season speedboat dive trips to some of Thailand's best dive sites and enjoy small groups, short journey times, and a focus on great personal service, safety and fun.

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