Cassis tuberosa

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Cassis tuberosa
Cassis tuberosa.png
A live C. tuberosa in situ
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Caenogastropoda
clade Hypsogastropoda
clade Littorinimorpha
Superfamily: Tonnoidea
Family: Cassidae
Subfamily: Cassinae
Genus: Cassis
Subgenus: Cassis
Species: C. tuberosa
Binomial name
Cassis tuberosa
(Linnaeus, 1758)

Cassis tuberosa, the king helmet, is a species of very large sea snail with a solid, heavy shell, a marine gastropod mollusc in the family Cassidae, the helmet shells and their allies.


This species occurs in the Western Atlantic Ocean in: North Carolina, Florida, Mexico, Honduras, Colombia, Costa Rica, Panama, Colombia, Venezuela, Bermuda, Bahamas, Cuba, Hispaniola, Puerto Rico, Virgin Islands, Leeward Islands, Windward Islands, Brazil, and in the eastern Atlantic Ocean at the Cape Verde Islands. [1]

Ventral side, animal alive but soft parts retracted


The maximum recorded shell length is 301 mm.[1]


Its minimum recorded depth is 0 m.[1] and maximum recorded depth is 27 m.[1]

Human use[edit]

The shell of this species has been used for creating cameos.


  1. ^ a b c Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi:10.1371/journal.pone.0008776.

External links[edit]