Nectria wilsoni

Wilsons seastar
Nectria wilsoni
Nectria wilsoni, Albany, WA, Photo: Rick Stuart-Smith


Temperate Australasia


Tabulae with concave upper surfaces and numerous small, rounded granules; the tabulae are well separated from each other by gaps and are restricted to the central section of the body. The arms are narrower and pointier than similar species, and lacking tabulae with gaps between. This species occurs in slightly more sheltered habitats than other Nectria species and is occasionally observed in seagrass meadows.


Max Size: 20 cm

Sea Temperature Range: 14.4-22.7°C

Depth: 0-45m

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: Infrequent (4.7% 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: Solitary (1 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