Cypraecassis rufa is a species of large sea snail, a marine gastropod mollusc in the family Cassidae. It is commonly known as the bullmouth shell or red helmet shell, and also as the cameo shell.
This large species attains a size of 200 mm.
This species is found off the southern African coast from northern KwaZulu-Natal and Mozambique. It is more common in Mozambique.[1] It is also a common shell to find on the shores of Kenya.