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Encyclopedia > Pacific sleeper shark
iPacific sleeper shark
Conservation status
Data deficient (DD)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Squaliformes
Family: Dalatiidae
Genus: Somniosus
Species: S. pacificus
Binomial name
Somniosus pacificus
Bigelow & Schroeder, 1944
Sharks Portal

The Pacific sleeper shark, Somniosus pacificus, is a sleeper shark of the family Dalatiidae, found circumglobally on continental shelves and slopes in temperate waters between latitudes 70° N and 47° S, from the surface to 2,000 m. Its length is up to 4.4 m, although FishBase accepts that it could possibly reach 7 m. The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Subregnum Parazoa Porifera Subregnum Eumetazoa Placozoa Orthonectida Rhombozoa Radiata (unranked) Ctenophora Cnidaria Bilateria (unranked) Acoelomorpha Myxozoa Superphylum Deuterostomia Chordata Hemichordata Echinodermata Chaetognatha Xenoturbellida Superphylum Ecdysozoa Kinorhyncha Loricifera Priapulida Nematoda Nematomorpha Onychophora Tardigrada Arthropoda Superphylum Platyzoa Platyhelminthes Gastrotricha Rotifera Acanthocephala Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Nemertea Phoronida Ectoprocta Bryozoa... {{{subdivision_ranks}}} See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... Subclasses and Orders See text. ... Superorders Galeomorpha Batoidea Selachimorpha Elasmobranchii is the subclass of cartilaginous fishes that includes skates, rays and sharks. ... Families Squalidae (dogfish sharks) Centrophoridae (gulper sharks) Dalatiidae (sleeper sharks) Echinorhinidae (bramble sharks) Squaliformes is an order of sharks that includes the smooth dogfish and spiny dogfish and others, about 80 species in four families. ... The sleeper sharks are a family (Dalatiidae) of sharks. ... Species See text. ... In biology, binomial nomenclature is the formal method of naming species. ... Henry B. Bigelow (1879-1967) was a pioneering oceanographer and marine biologist. ... Schroeder - an umlaut-converted representation of Schröder - is a common German surname. ... Image File history File linksMetadata Greyreefsharksmall2. ... Binomial name Somniosus pacificus Bigelow & Schroeder, 1944 The sleeper shark (Somniosus pacificus) is a shark living in waters off Antarctica and is one of two creatures (along with the sperm whale) that hunt giant squid and colossal squid for food, as research on the stomach contents of this shark has... In biological classification, family (Latin: familia, plural familiae) is 1) a rank or 2) a taxon in that rank. ... The sleeper sharks are a family (Dalatiidae) of sharks. ... The continental shelf is an area of relatively shallow sea water that is found on the edge of each continent. ... In geography, temperate latitudes of the globe lie between the tropics and the polar circles. ... Latitude, usually denoted symbolically by the Greek letter φ, gives the location of a place on Earth north or south of the Equator. ... FishBase is a comprehensive database of information about fish. ...

The Pacific sleeper shark feeds on bottom animals such as fishes, octopuses, squids, crabs and tritons, Harbor Seals and carrion. The flesh contains a type of toxin which, when eaten, produces symptoms of drunkenness. It is one of two creatures (along with the sperm whale) that feed on giant squid and colossal squid, as research on the stomach contents of this shark has shown. Since the 7 m (23 ft) shark might have problems devouring a 12 to 14 m (39 to 46 ft) squid it is believed that the shark may feed on squid carcasses rather than live squid. Families 14 in two suborders, see text The octopus is a cephalopod of the order Octopoda that inhabits many diverse regions of the ocean, especially coral reefs. ... SQUIDs, or Superconducting Quantum Interference Devices, are used to measure extremely small magnetic fields; they are currently the most sensitive such devices (magnetometers) known, with noise levels as low as 3 fT·Hz−½. While a typical fridge magnet is ~0. ... Superfamilies Dromiacea Homolodromioidea Dromioidea Homoloidea Eubrachyura Raninoidea Cyclodorippoidea Dorippoidea Calappoidea Leucosioidea Majoidea Hymenosomatoidea Parthenopoidea Retroplumoidea Cancroidea Portunoidea Bythograeoidea Xanthoidea Bellioidea Potamoidea Pseudothelphusoidea Gecarcinucoidea Cryptochiroidea Pinnotheroidea * Ocypodoidea * Grapsoidea * An asterisk (*) marks the crabs included in the clade Thoracotremata. ... Species Charonia tritonis Charonia variegata Triton is the name given to various large sea snails of the genus Charonia, named after the Greek god Triton, son of Poseidon, god of the Sea. ... Binomial name Phoca vitulina Linnaeus, 1758 The Harbor Seal or Common seal (Phoca vitulina) is a true seal of the Northern Hemisphere. ... Titan arum For other uses, see Carrion (disambiguation). ... Binomial name Physeter macrocephalus Linnaeus, 1758 Sperm Whale range (in blue) The Sperm Whale (Physeter macrocephalus) is the largest of all toothed whales and is the largest toothed animal alive, measuring up to 18 metres (60 ft) long. ... Species Architeuthis dux Steenstrup, 1857 ?Architeuthis hartingii Verrill, 1875 ?Architeuthis japonica Pfeffer, 1912 ?Architeuthis kirkii Robson, 1887 ?Architeuthis martensi (Hilgendorf, 1880) ?Architeuthis physeteris (Joubin, 1900) ?Architeuthis sanctipauli (Velain, 1877) ?Architeuthis stockii (Kirk, 1882) Synonyms Architeuthus Steenstrup, 1857 Dinoteuthis More, 1875 Dubioteuthis Joubin, 1900 Megaloteuthis Kent, 1874 Megateuthis Hilgendorf, 1880 Mouchezis... Binomial name Mesonychoteuthis hamiltoni Robson, 1925 The Colossal Squid (Mesonychoteuthis hamiltoni), sometimes called the Antarctic or Giant Cranch Squid, is believed to be the largest squid species, and the only member of the genus Mesonychoteuthis. ...

Reproduction is ovoviviparous, with 300 pups in a litter. Length at birth about 42 cm or less. Ovoviviparous animals develop within eggs that remain within the mother up until they hatch or are about to. ...

See also

Binomial name Somniosus microcephalus Bloch & Schneider, 1801 Range of the Greenland shark The Greenland shark, Somniosus microcephalus, also known as the sleeper shark, gurry shark, ground shark or grey shark, is a large shark native to the waters of the North Atlantic Ocean around Greenland and Iceland. ... // Sharks belong to the superorder Selachimorpha in the subclass Elasmobranchii in the class Chondrichthyes. ...


Please note that the ITIS system URL has changed (25 September 2006). ... January 23 is the 23rd day of the year in the Gregorian calendar. ... 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ... FishBase is a comprehensive database of information about fish. ... October 6 is the 279th day of the year (280th in leap years). ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ...

External links

  • 8 January, 2004, BBCNews: New giant squid predator found



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