Resembles Pinna bicolor but is smaller, more translucent and has 10-14 radiating ribs with fingernail-shaped spines. It occurs commonly in water depths below 20 m but rarely enters shallower water.
Information
Max Size: 24 cm
Sea Temperature Range: 10.8-17.4°C
Depth: 5-40m
Habitat: Soft sediment
Rarity
IUCN Threat Status: Not Evaluated
Occurrence: Widespread (100% 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
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