The Sydney Rock Whelk is usually found at low-tide level on or near its favourite food, the Cunjevoi.
The Sydney Rock Whelk has distinguishing red-brown lines, often in pairs between the grooves of the shell.
The Sydney Rock Whelk is found on intertidal rock platforms.
The Sydney Rock Whelk is found in Southern Queensland, New South Wales, Victoria, South Australia, Western Australia and Tasmania.
Feeding and diet
The Sydney Rock Whelk selectively feeds on the Cunjevoi's gonads (reproductive organs) and reaches them by inserting its long mouthparts down one of the siphons or feeding tubes of the Cunjevoi.
Other behaviours and adaptations
Aboriginal people most likely ate these snails in the past, as the shells have been found in Aboriginal midden sites around Sydney.