Haliotis scalaris

Grooved abalone
Haliotis scalaris
Haliotis scalaris


Temperate Australasia


Wide spiral ridge running around the shell between the row of holes and the spire. This ridge is best seen on the inside of the shell, where it forms an obvious groove. The internal groove of animals east of central South Australia is not as sharply cornered as in western animals, and the eastern animals were called H. emmae until recently. Haliotis scalaris resembles H. rubra, but is a smaller animal and has a wide groove around the outside of the shell next to the row of holes.


Max Size: 12 cm

Sea Temperature Range: 13-22.3°C

Depth: 0-50m

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 (20.7% 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: Several (6 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