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Deep blue shark size comparison4/5/2023 ![]() ![]() The blue shark is nomadic and shows a clockwise migration pattern following the Gulf Stream to the Caribbean, passing along the coast of the United States, Eastern Europe, Southern Africa and back to the Caribbean. If this happens, it then becomes one of the fastest fish. It is a slow-swimming animal that increases its speed when feeling stimulated by external factors, such as the presence of animals from which it can feed on. Its swimming speed and its triangular teeth help this shark tearing the skin and flesh of the most complicated animals. When needed it joins with other sharks of the same species and cooperates to attack larger prey and facilitate their capture. ![]() The blue shark surrounds its prey before attacking it. They usually seek to catch small prey, but if they find large mammal carrion, it becomes part of their food. Its diet includes octopus, squid, mackerel, tunas, lobsters, crabs, small sharks and occasionally seabirds. It is a carnivorous predator that feeds on about 24 species of cephalopods and 16 species of fish. It inhabits the epipelagic and mesopelagic zones near the coasts and the continental shelves, but if it dwells tropical waters, then it tends to go towards deeper waters. It fancies approaching the shores, where divers and boats see it often. It concentrates mainly in latitudes between 20 ° and 50 ° north and likes waters with temperatures of between 7 ° and 16 ° centigrade, although it can tolerate warmer temperatures slightly above 21 ° Celsius. It lives near the coasts except those of Antarctica. It dwells temperate, tropical and subtropical waters up to 350 meters deep. The blue shark inhabits in a great diversity of areas around the world. It is the most distributed shark in the world. This species presents slight sexual dimorphism since the female tends to measure little more than 1 meter in comparison with the male. It reaches a length ranging from 3.8 to 4 meters and weighs about 240 kilograms. Its eyes are large, its teeth are triangular, and it has a conical snout. The second dorsal fin measures almost half the size of the first and its pectoral fins are unusually long compared to other sharks. The upper part is an indigo blue tone while the ventral and the sides are white. It exhibits countershading like many other sharks. The aerodynamic shape and lightness of the blue shark body allow it to move “elegantly” across the oceans. It is a member of the order Carcharhiniformes, of the family Carcharhinidae and the Genus Prionace. The term “glauca” comes from the Latin meaning “blue-gray” or “green.” It is the most distributed shark in the world. The “ Prionace glauca” is a beautiful shark, with a blueish skin which gives it its common name.
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