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Blue Shark

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800px-Prionace glauca 1
The Blue Shark (Prionace glauca) can grow up to 230cm in UK Waters.

IdentificationEdit

Upper body cobalt blue with a white under belly. Long pectoral fins to allow this Shark to glide along in ocean currents.

BreedingEdit

Plancentally viviparous (live bearing) Litters from 4 to 135,although usually 20 to 30. Female Blue sharks do not mature until they are 5 years old (length approximately 220cm) - and probably do not breed for the first time until they are 7 years old.Young born at 40cm, though gravid females are rarely encountered in UK waters.

HabitatEdit

Coastal/Offshore species from the surface down to 150+m. To be found in relatively cool waters of -140C to waters as warm as 210C

FoodEdit

Squid, Mackerel, Herring, Pilchards, Sprats and some bottom living species.

RangeEdit

The most wide ranging of all the Sharks.To be found in ,most temperate and tropical waters around the world. During very warm summers found in small numbers around Scotland and into the North Sea.

Additional NotesEdit

The stock populations to be found off the coasts of the UK are mainly juvenile females, under 5 years old. The stocks off the eastern sea-board of America appear to be mature fish.

ReferencesEdit

The Aquarium Project

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