Turbo undulatus

Turban shell
Turbo undulatus
Turbo undulatus, Port Davey, TAS, Photo: Ian Shaw
Turbo undulatus
Turbo undulatus, Port Davey, TAS, Photo: Ian Shaw
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Turbo undulatus
Turbo undulatus



Smooth, round shell with a low spire and mottled green markings. It can occur in huge aggregations on southern reefs, and in such situations denudes the reef of large seaweeds. The species is harvested commercially in Tasmania and is considered one of the more tasty gastropods.


Max Size: 5 cm

Sea Temperature Range: 10.4-22.2°C

Depth: 0–10 m

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Common (34.2% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Many (21 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney