Ranella australasia (Perry, 1811)
Common in the Solitary Islands Marine Park. Recorded from New Zealand and South Africa. In Australia recorded from Tin Can Bay in Queensland to Abrolhos Islands in Western Australia, including Tasmania.
Found around rocky coasts, depth range from intertidal to at least 350m.
When alive the thick periostracum obscures an even tan exterior, interior white. Operculum oval. Grows to 130mm, intertidal specimens commonly 80mm in length.