Spirula

Spirula

Kingdom
Phylum
Class
Order
Family
Genus
SPECIES
Spirula spirula
LENGTH
30-45 mm

Spirula spirula is a species of deep-water squid-like cephalopod mollusk. It is the only extant member of the genus Spirula, the family Spirulidae, and the order Spirulida. Because of the shape of its internal shell, it is commonly known as the ram's horn squid or the little post horn squid. Because the live animal has a light-emitting organ, it is also sometimes known as the tail-light squid. Live specimens of this cephalopod are very rarely seen because it is a deep-ocean dweller. The small internal shell of the species is, however, quite a familiar object to many beachcombers. The shell of Spirula is extremely light in weight, very buoyant, and surprisingly durable; it very commonly floats ashore onto tropical beaches all over the world. This seashell is known to shell collectors as the ram's horn shell or simply as Spirula.

Climate zones

References

1. Spirula Wikipedia article - https://en.wikipedia.org/wiki/Spirula
2. Spirula on The IUCN Red List site - https://www.iucnredlist.org/species/162587/922936

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