Oppomorus noduliferus (Menke, 1829)

Distribution: 

Relatively common in the Solitary Islands Marine Park. Recorded from Queensland, Western Australia and Norfolk Island. Also recorded from Madagascar. 

Ecological Notes: 

Frequents intertidal areas on rocky shores, often found in shallow rock pools and on rock platforms.

Additional Notes: 

Whorls rounded and sculptured with broad, rounded, oblique axial ribs. Shell colour white but usually severely eroded. Animal is bright green in colour. Members of this family are carnivorous, feeding on other gastropods, bivalves and barnacles. Considered a pest in bivalve aquaculture. Specimen photographed approximately 20 mm in length, grows to 25 mm.

References: 

The Seashells of New South Wales, Des Beechey, Senior Fellow, Australian Museum, Release 25. Website at https://seashellsofnsw.org.au/Rapaninae/Pages/morula_nodulifera.htm. Accessed 09/11/2018.

Atlas of Living Australia website at https://bie.ala.org.au/search?q=oppomorous+noduliferus. Accessed 09/11/2018.