Zeacumantus subcarinatus

Zeacumantus subcarinatus, common name the southern creeper, is a species of small sea snail or mud snail, a marine gastropod mollusc in the family Batillariidae.

Distribution
This species is found on the coasts of New Zealand and Australia (New South Wales).

Description
The size of an adult shell varies between 8 mm and 16 mm.