Chromodorididae: Thorunna arbuta (Burn, 1961) (‘shrubby sea-slug’)
Synonym(s): arbuta Burn, 1961.
Typical body-length 30 mm. Lives subtidally and offshore on sponges, on which it feeds. Native. Endemic to southeastern and southwestern Australia (TAS, VIC and WA).
Order: Euctenidiacea – Doridacea