They differ by having various forms of ridges including spiked, curled and branched. Like most snails in this family, they are predators, feeding on gastropods, bivalves and barnacles by drilling holes through the shells of their prey. Fresh shells have ornate sculpture but they are often badly damaged by the time they wash up onto beaches.
How to identify Pterochelus triformis?
A white to cream shell with three thin ridges with rounded knuckles on the shell between the ridges
What habitats does Pterochelus triformis live in?
Rock pools and subtidal areas of sheltered and exposed coast
What is the distribution of Pterochelus triformis?
Southern Australia including around Tasmania
How big does Pterochelus triformis grow?
Can grow to around 60mm
Disclaimer: A lot of work goes into trying to identify and ensure accurate identifications are made and that the listed Descriptions, Sizes, Habitats and Distribution information is as accurate and valid as possible. Unfortunately, information in this arena is ever changing and as such no guarantee can be offered that it is correct or currently valid as a result the information is provided as a guide, and it is always suggested that you do a little research to ensure you have the latest and most accurate information. View the reference's or bibliography I welcome any feedback and comments on the information provided.