Skip to Content
Sign up
Report an error

Gyrosmilia interrupta

(Ehrenberg, 1834)

Colonies are submassive humps or are laminar with free margins. They are commonly up to 0.5 metres across. Valleys are approximately 8 millimetres wide and tend to radiate and bifurcate towards the colony margins. Septa are uniformly spaced and exsert. They form a thin ridge along the walls and plunge steeply in valley centres. There are no columellae. Tentacles are extended only at night.

Colour: Distinctive uniform greenish grey-brown.

Habitat: Shallow reef environments protected from strong wave action.

Abundance: Usually uncommon.

Similar species: Ctenella chagius , Meandrina meandrites

Taxonomic note: Source reference: Veron (2000). Taxonomic reference: Scheer and Pillai (1983). Additional identification guide: Sheppard and Sheppard (1991).

Map displaying probable distribution of species. Points indicate recorded sightings from OBIS.
Gyrosmilia interrupta.  Tanzania.  This species usually occurs as small colonies on reef slopes and in crevices.  Charlie Veron.

Gyrosmilia interrupta.Tanzania.This species usually occurs as small colonies on reef slopes and in crevices.Charlie Veron.

Gyrosmilia interrupta.  Tanzania.  A submassive colony.  Charlie Veron.

Gyrosmilia interrupta.Tanzania.A submassive colony.Charlie Veron.

Gyrosmilia interrupta.  Tanzania.  Detail of valleys.  Charlie Veron.

Gyrosmilia interrupta.Tanzania.Detail of valleys.Charlie Veron.

Gyrosmilia interrupta.  Madagascar.  Showing valleys.

Gyrosmilia interrupta.Madagascar.Showing valleys.

Gyrosmilia interrupta.  Red Sea.  Showing whole colony.

Gyrosmilia interrupta.Red Sea.Showing whole colony.

Gyrosmilia interrupta.  Red Sea.  Showing valleys.

Gyrosmilia interrupta.Red Sea.Showing valleys.

Gyrosmilia interrupta.  South Africa.  Showing valleys.

Gyrosmilia interrupta.South Africa.Showing valleys.