blue shark

noun
a slender, pelagic shark, Prionace glauca, that is indigo blue above, shading to white below.
Also called great blue shark.


Origin:
1665–75

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica
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blue shark

(Prionace glauca), abundant shark of the family Carcharhinidae found in all oceans, from warm temperate to tropical waters. Also known as the blue whaler, the blue shark is noted for its attractive, deep-blue colouring contrasting with a pure-white belly. It is a slim shark, with a pointed snout, saw-edged teeth, and long, slim pectoral fins. Maximum length is about 4 metres (12 feet)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
It's a blue shark, once about five feet long, he estimates.
Scientists use a de-hooking device to release a live blue shark.
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