Somniosidae

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Sleeper sharks
Somniosus.jpg
Somniosus sp.
Scientific classification
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Somniosidae

Diversity
6 genera, 20 species; See text.

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The Somniosidae are a family of sharks in the order Squaliformes, commonly known as sleeper sharks.[1]

Distribution and habitat

The Somniosidae can be found in:

  • Arctic to subantarctic waters
  • All oceans
  • Shelves in cold waters
  • Continental and slopes
  • Temperate and tropical waters[2]

Diet

Beaks recovered from the stomachs of sleeper sharks suggest that these sharks feed on colossal squid.[3]

Genera and species

Hákarl

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Greenland sharks of the family Somniosidae are hunted for food in Iceland. The shark carcass is traditionally fermented in a shallow pit, with stones placed on top of the shark, allowing poisonous internal fluids, like urea and trimethylamine oxide, to be pressed and drained out of the body. The meat is then cured for several months, rendering it safe for human consumption.[4]

References

  1. Froese, Rainer, and Daniel Pauly, eds. (2011). "Somniosidae" in FishBase. February 2011 version.
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  3. Cherel, Y. & G. Duhamel 2004. Antarctic jaws: cephalopod prey of sharks in Kerguelen waters. PDF (531 KB) Deep-Sea Research I 51: 17–31.
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