Half-Grained Helmet

Semicassis semigranosa

Sea Life Endemic IUCN: Not Evaluated

About

This shell is thin and fragile often found broken along the beach the shell colour varies from a whitish yellow to tan browns it has fine beadding on the upper whorls

Size

Can grow to around 50mm

Habitat

Lives subtidally and offshore on sand

Distribution

From WA to Victoria including Tasmania

Gallery

Select any photo or video to view it large with its details and credits.

Local Sightings

1 recorded sighting in and around the area.

References & citations (2)

Grove, S.J. (2018). A Guide to the Seashells and other Marine Molluscs of Tasmania web-site (accessed 2021-09-22 14:03:33)
The Atlas of Living Australia (accessed 2022-08-31 14:27:40)

Quick Facts

Common name: Half-Grained Helmet
Scientific name: Semicassis semigranosa (Lamarck, 1822)
Family: Cassidae
Category: Sea Life › Shellfish
Origin: Endemic
Conservation: Not Evaluated

Australian Faunal Directory

Information Website

Seen one? Snapped one?

Sightings and photos help keep this record growing.

Tell Us About It

Disclaimer: A lot of work goes into making sure identifications, descriptions, sizes, habitats and distribution details are as accurate as possible — but this information is ever-changing, so no guarantee is offered that it is correct or currently valid. Treat it as a guide and do a little of your own research for the latest word. Feedback and corrections are always welcome.