Palmadusta clandestina (Linnaeus, 1767)
Moderately common and recorded throughout the Solitary Islands Marine Park. Found throughout the Indo-Pacific region. In Australia recorded from Geraldton in Western Australia, through the tropical north to Queensland and south to southern NSW, including Lord Howe Island.
Found from inter-tidal to at least 12m depth on rocky reef. Usually concealed under rocks.
The shell is almost pure white with fine brown zigzag lines on the surface, these lines quickly wearing away on dead specimens. The mantle is jet black with smallish white papillae. Egg masses are white. Grows to 20mm.