AY Honors/Species Account/Isurus oxyrinchus
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The Shortfin Mako Shark (Isurus oxyrinchus "sharp nose"), commonly just called Mako Shark despite not being the only species of mako, is a large shark of the Lamnidae family with a full-grown size of 2.75–3.75m (9-12 feet). It usually weighs around 250–700kg (575–1600 pounds) and has a bluish top and a white underside. Although the sexes grow at about the same rate, females are thought to have a longer life span. Females grow larger and weigh more than the males. Shortfin Makos are renowned for their speed and their ability to leap out of the water. The sharks have an average speed of 22 miles per hour, with a burst speed of up to 60 miles per hour.
While the name 'Mako' comes from the Maori, this high leaping, boat attacking fish is sought as game worldwide. Some of the largest makos in the world can be found in New England waters. While the closely related Longfin Mako Shark, Isurus paucus, is found farther offshore in the Gulf Stream. Shortfin Makos were popularized in the movie Deep Blue Sea.
The Longfin Mako Shark is a yolk-sac oviviparous shark, meaning it gives birth to live young who feed of a sac full of yolk in the womb. The gestation period for a Mako Shark is 15-18 months. Mako embryo in the female's body literally consume each other to get nutrients. This is called intrauterine cannibalism.
The "mako" name was also applied to a 1961 Chevrolet Corvette show car, the "Mako Shark" corvette, whose detailing was partly inspired by the look of that very fast fish.
External link
"Lamniformes." Grzimek's Animal Life Encyclopedia E-Book. (requires license to view)
