Semicassis undulata
- kingdom: Animalia
- phylum: Mollusca
- class: Gastropoda
- order: Littorinimorpha
- family: Cassidae
- genus: Semicassis
- species: Semicassis undulata
Toulon
B8
France
Santa Margherita Ligure
Sori
Liguria
Italy
Marsaskala
Marsaskala
Malta
Peniche
Leiria
Portugal
Palma
Balearic Islands
Valsequillo de Gran Canaria
Canary Islands
Palamós
Catalonia
Spain