The Blue Shark ranks as the only known variety of shark that experts actually call (comparatively, of course) docile. In fact, since the year 1580, reports indicate only 13 shark attacks involving the Blue Shark.
Sadly for the animal, though, they remain one of the most widely fished sharks in any ocean. Though their flesh seems technically edible, humans rarely consume them.
Fishermen catch 20 million individuals of this species each year, with the flesh being principally used for fishmeal. Despite this terrible fact, they still do not appear to be endangered. The reason? They thankfully reproduce in vast numbers.
Blue Shark Physical Characteristics
True to their name, the Blue Shark boasts a deep blue color on the upper body. Their sides display a lighter shade of blue, and the belly typically shows white.
The species displays moderate sexual dimorphism, with the females being slightly larger than the males. The male Blue Shark attains lengths of up to 9.3 ft (2.8 m), while the female – 10.8 ft (3.3 m). Not only do the females grow larger, they literally have thicker skin (3 times as thick to be exact).
They remain a viviparous creature and give birth to as many as 100 live young at one time. Their precise lifespan remains undetermined but estimates put it at 20 years.
Blue Shark Range, Habitat, and Ecology
The Blue Shark lives in most temperate and tropical regions, usually in deep water, at depths of as much as 1,150 ft (350 m).
They migrate enormous distances, some as far as from New England to South America.
The animal evolved a unique mating ritual in which the male repeatedly bites the female. This serves as the reason she evolved thicker skin for self-defense.
This species feeds primarily on a variety of squid, but will also prey on other invertebrates such as lobsters, shrimp, cuttlefish, and crabs. Larger types of sharks form their only known natural predators