The shell is solid and depressed. Shaped and marked like a spoked wheel. Background colour is cream or pink and streaked with reddish brown, often with a metallic copper sheen. Very abundant.

Shallow subtidal bars off sandy beaches on semi-exposed to exposed coasts.

Unusually this is mainly a filter feeder or mucous net feeder. It secretes a chain of mucous bubbles which trap particles, this is then slurped up and digested.

(Photo contributed by Brian Paavo)
Coastal Marine Inverts Vol 1