You can sponsor this page

Spirula spirula   (Linnaeus, 1758)

ram's horn squid

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Spirula spirula   AquaMaps   Data sources: GBIF OBIS
Upload your photos and videos
| All pictures | Google image |
Image of Spirula spirula (ram
Picture by Grist, John and Maria

Classification Common names | Synonyms | CoL | ITIS | WoRMS

Cephalopoda | Spirulida | Spirulidae

Main reference References | Biblio | Coordinator | Collaborators

Jereb, P. and C.F.E. Roper (eds.). 2005. (Ref. 1695)

Size / Weight / Age

Max length : 4.5 cm ML male/unsexed; (Ref. 1695)


Pelagic; depth range 300 - 1750 m (Ref. 1695)

Climate / Range

Tropical; ? - 10°C (Ref. 1695); 54°N - 32°S, 89°W - 160°W (Ref. 1695)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Circumglobal in tropical and subtropical oceanic waters.

Biology     Glossary (e.g. epibenthic)

Rarely exceeds 4.5 cm ML (Ref. 1695). Inhabits depth 600 to 700 m during the day and found in depths less than 300 m at night. Young is captured at depths 1,000 to 1,750 m, which suggests that females lay eggs on bottom of continental slopes (Ref. 1695). Dead shells washed up on the beaches often in large numbers (Ref. 88739). Members of the class Cephalopoda are gonochoric. Male and female adults usually die shortly after spawning and brooding, respectively. Mating behavior: Males perform various displays to attract potential females for copulation. During copulation, male grasp the female and inserts the hectocotylus into the female's mantle cavity where fertilization usually occurs. Life cycle: Embryos hatch into planktonic stage and live for some time before they grow larger and take up a benthic existence as adults (Ref. 833).

IUCN Red List Status (Ref. 114614)

CITES status (Ref. 94142)

Not Evaluated

Threat to humans

Human uses

| FisheriesWiki |

More information

Common names
Egg development
Mass conversion

Internet sources

BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | ispecies | National databases | PubMed | Scirus | FishBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimation of some characteristics with mathematical models

Price category (Ref. 80766)