About Semicassis undulata (Gmelin, 1791)
Semicassis undulata, first formally described by Gmelin in 1791, is a medium-sized species of sea snail. It is a marine gastropod mollusc that belongs to the subfamily Cassinae, which is the group commonly known as helmet snails and bonnet snails. This species is native to the Mediterranean region. It can be found in the Mediterranean Sea, as well as in the Atlantic Ocean off the coast of Northwest Africa and near the Macaronesian Islands.