Habitat 
Depth 
Group 
Role WHAT DOES IT LOOK LIKE?
Its shell measures about four to eight centimetres. It is swollen, with a fairly low spire and a large final whorl carrying bumps rather than large spines.
The broad oval opening is orange-red. An operculum, a piece attached to the foot, closes the shell when the body withdraws. Attached organisms may partly hide the external sculpture.
WHERE DOES IT LIVE?
It mainly inhabits coastal rock, often in the first few metres, at wave-exposed sites. Deeper populations are also known.
Shelter availability and water movement influence its activity conditions alongside prey abundance.
WHAT DOES IT EAT?
It eats mussels, barnacles and limpets, among other prey. It can bore through their protection using its radula, a band of tiny teeth, and secretions.
A meal therefore often takes place on fixed prey. A motionless rock shell is not necessarily resting.
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