The blue shark sometimes circles swimmers or divers for up to fifteen minutes or more. Like other requiem sharks, blue sharks do not do well in captivity.
For example, the blue shark is the definitive host of the tetraphyllidean tapeworm, Pelichnibothrium speciosum (Prionacestus bipartitus). Reproduction – Viviparous, yolk-sac placenta. Courtship is believed to involve biting by the male, as mature specimens can be accurately sexed according to the presence or absence of bite scarring. , Blue sharks, like most pelagic sharks, tend to fare poorly in captivity. & Winker, H. (2019). Its greatest Pacific concentrations occur between 20° and 50° North, but with strong seasonal fluctuations. Averaging around 3.1 m (10 ft) and preferring cooler waters, the blue shark migrates long distances, such as from New England to South America. Blue sharks are viviparous and are noted for large litters of 25 to over 100 pups. The fins are used to make shark-fin soup, while the liver yields oil.
Because of their attractive coloration and shape, sport fishermen may catch and mount blue sharks to display them.
 The blue shark can swim at fast speeds, allowing it to catch up with prey easily. How to Measure . Young and smaller individuals may be eaten by larger sharks, such as the great white shark and the tiger shark. From 1580 up until 2013, the blue shark was implicated in only 13 biting incidents, four of which ended fatally. Blue sharks are carnivorous predators that feed mainly on squid, other cephalopods, and fish. Size Head (cm) XS: 53-54: SM: 55-56: MD: 57-58: LG: 59-60: XL: 61-62: 2XL(KS) 63-64: Sizing information is provided by the manufacturer and does not guarantee a perfect fit.  In temperate seas it may approach shore, where it can be observed by divers; while in tropical waters, it inhabits greater depths. List of prehistoric cartilaginous fish genera, "A compendium of fossil marine animal genera (Chondrichthyes entry)", 10.2305/IUCN.UK.2019-3.RLTS.T39381A2915850.en, Sharks, Emerging Species Profile Sheets, published by the Department of Fisheries and Aquaculture, Government of Newfoundland and Labrador, Blue Shark (Prionace glauca) – Ireland's Wildlife, "Blue Sharks Feeding on Anchovy Baitball", "Heavy Metal Concentrations of two highly migratory sharks (, Species Implicated in Attacks :: Florida Museum of Natural History, BBCNews – Footage of shark which closed New Quay (Wales) beach, Species Description of Prionace glauca at www.shark-references.com, https://en.wikipedia.org/w/index.php?title=Blue_shark&oldid=984871175, Creative Commons Attribution-ShareAlike License, This page was last edited on 22 October 2020, at 16:17. Like many other sharks, blue sharks are countershaded: the top of the body is deep blue, lighter on the sides, and the underside is white. Mature females are larger than males. The dorsal surface is a dark blue colour, and the belly is white. Blue sharks are found off the coasts of every continent, except Antarctica. Males mature at 4-6 years: females at 5-7.  Most of these were in captivity for about three months or less, and some of them were released back to the wild afterwards. The first attempt of keeping blue sharks in captivity was at Sea World San Diego in 1968, and since then a small number of other public aquariums in North America, Europe and Asia have attempted it. It reaches a length ranging from 3.8 to 4 meters and weighs about 240 kilograms. The blue shark takes its common name from its coloring. Also, it is the target of sports activities in the United States, Australia and some parts of Europe. They have been known to feed until they actually can not eat any more. Its upper body is blue, with lighter shading along its sides and a white underside. The shark is found worldwide in temperate and tropical waters.
They are highly migratory with complex movements related to prey availability and reproductive cycles. , The blue shark has one of the largest ranges in terms of depths of the water. SIZEAt birth, the shark is 1.1 to1.4 ft [35 to 44 cm] in length.
They are triangular in shape, serrated, and recurved. Blue sharks are found worldwide, in temperate and tropical waters. In the Pacific, at latitudes between 20°N and 50°N, they are known to migrate to higher latitudes during the summer and lower latitudes during the winter. (2006).  Large specimens can grow to 3.8 m (12 ft) long.
, Blue sharks are relatively easy to feed in captivity, and the three primary issues appear to be transport, predation by larger sharks and trouble avoiding smooth surfaces in tanks.
 The meat is edible, but not widely sought after; it is consumed fresh, dried, smoked and salted and diverted for fishmeal.
It dwells temperate, tropical and subtropical waters up to 350 meters deep. One cool Blue shark fact is that they also tend to show a distinct hierarchy within these schools, and are segregated by size as well as sex – or, paired in groups of all females or all males.  They also feed on various types of sea birds, crustaceans such as lobster, crab, and shrimp, and they also feed on carrion. They sometimes take seabirds at the surface of the water. Male sharks mature by four or five years of age, while females mature at five to six years of age. The blue shark is not a regular victim of commercial fishing. It has a long caudal heterocercal fin.
Deep Blue played a role in the Discovery Channel’s 2014 Shark Week when she was tagged by experts. Its greatest Pacific concentrations occur between 20° and 50° North, but with strong seasonal fluctuations. The blue shark (Prionace glauca) is a species of requiem shark, in the family Carcharhinidae, that inhabits deep waters in the world's temperate and tropical oceans. They have been known to frequently swim to inshore areas around oceanic islands, and locations where the continental shelf is narrow. , From Simple English Wikipedia, the free encyclopedia, "A compendium of fossil marine animal genera (Chondrichthyes entry)", International Union for Conservation of Nature, "FLMNH Ichthyology Department:Blue Shark", "Blue Shark - Animal Facts and Information", "Blue Sharks, Prionace Glauca ~ MarineBio.org", BBCNews - Footage of shark which closed New Quay (Wales) beach, https://simple.wikipedia.org/w/index.php?title=Blue_shark&oldid=7097587, Creative Commons Attribution/Share-Alike License. This type of adaption makes it easy for them to be able to find food. Migrations often follow major trans-oceanic currents. Female blue sharks have adapted to the rigorous mating ritual by developing skin three times as thick as male skin. In the eastern Pacific, Blue sharks range from the Gulf of Alaska to Chile.
They prefer cooler water ranging from 7 to 16 °C (45-61 °F) in temperature. She has taught science courses at the high school, college, and graduate levels. The male blue shark commonly grows to 1.82 to 2.82 m (6.0 to 9.3 ft) at maturity, whereas the larger females commonly grow to 2.2 to 3.3 m (7.2 to 10.8 ft) at maturity. Mature females often bear bite wounds (mating scars). The pups are an important food source for other predators, but sharks that survive to maturity may live 20 years.  Occasionally, a female in excess of 3 m (9.8 ft) will weigh over 204 kg (450 lb).
It is located closer to the pelvic fins than to the pectoral fins.
SIZE At birth, the shark is 1.1 to1.4 ft [35 to 44 cm] in length. It is listed as Near Threatened by the IUCN. Interesting Bull Shark Facts (Carcharhinus leucas), Lemon Shark Facts: Description, Behavior, Conservation, Nurse Shark Facts: Description, Habitat, and Behavior, Greenland Shark Facts (Somniosus microcephalus), Harp Seal Facts (Pagophilus groenlandicus), 10.2305/IUCN.UK.2009-2.RLTS.T39381A10222811.en, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College, Distinguishing Features: Slender shark with a long snout, blue coloring on top, and white underside, Habitat: Worldwide in deep water of tropic and temperate oceans. Possibly the most wide-ranging of sharks because they live in such a broad range of areas. The gestation period is between nine and 12 months. Their populations remain constant throughout the year between 20°N and 20°S latitude.
Although generally lethargic, they can move very quickly. The male blue shark commonly grows to 1.82 to 2.82 m (6.0 to 9.3 ft) at maturity, whereas the larger females commonly grow to 2.2 to 3.3 m (7.2 to 10.8 ft) at maturity. This can result in the shark falling ill, and even dying. Blue sharks may eat tuna, which have been observed taking advantage of the herding behaviour to opportunistically feed on escaping prey.  The meat is edible, but not widely sought after; it is consumed fresh, dried, smoked and salted and diverted for fishmeal. They are often referred to as the "Wolves of the Sea" due to the complex levels of hierarchy that they form within their groups which highly reflects the behaviour of wolves. Some shark meat is dried, smoked, or made into fish meal. Replacing glass or other smooth surfaces with rock helps prevent accidents. It is estimated that 10 to 20 million of these sharks are killed each year as a result of fishing. The blue shark (Prionace glauca) is a type of requiem shark.It's related to the blacktip shark, blacknose shark, and spinner shark.Like other species in the requiem family, the blue shark is migratory and ectothermic, and it gives birth to live young. Maximum lifespan is still unknown, but it is believed that they can live up to 20 years.. One female weighed 391 kg (862 lb). Fun Fact: Blue shark females bear bite scars because the mating ritual involves the male biting the female. This species presents slight sexual dimorphism since the female tends to measure little more than 1 meter in comparison with the male.
It becomes infected by eating intermediate hosts, probably opah (Lampris guttatus) and/or longnose lancetfish (Alepisaurus ferox).
The blue shark (Prionace glauca) is a species of requiem shark, in the family Carcharhinidae, that inhabits deep waters in the world's temperate and tropical oceans.
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