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The blue shark’s sleek, tapered body makes it a graceful swimmer.
The blue shark’s sleek, tapered body makes it a graceful swimmer. Its elongated tail provides swimming power as it moves side-to-side. This shark is among the fastest swimming of the sharks and probably among the fastest swimming of all fish. Estimates of its speed vary, but some say that it can swim at about 60 miles per hour (97 km/h).
CLASS: Chondrichthyes (cartilaginous fish—sharks, skates, and rays)
ORDER: Carcharhiniformes (ground sharks)
FAMILY: Carcharhinidae (requiem sharks)
GENUS/SPECIES: Prionace glauca
Size: Average 6–8 ft (1.8–2.4 m)
Weight: 150–175 lbs (59–79 kg)
Depth: Down to 1,150 ft (350 m)
Diet: Fish, squid, cuttlefishes, octopuses
Habitat: Worldwide in tropical and temperate waters