Morula granulata (Granulated drupe) Morula marginalba?

These animals feed upon other mollusks by drilling with the radula and secreting acid to burn through the shell, leaving a small round hole as evidence. A pest of oyster farms.

Morula granulata can be found across the entire Indo-West Pacific Region, from eastern Africa to the eastern Pacific, including northern Australia from central Western Australia to Queensland.

Photo: Robert Whyte

Morula granulata (Granulated drupe)

Solid, biconical shell with five spiral rows of heavy tubercles around the body whorl. Narrow mouth with four teeth on the outer lip. Dark brown nodules. Grows to 30mm.

Photo: Robert Whyte