The Blue Shark (Prionace glauca) is a species in the family Carcharhinidae. These sharks are usually found in cool and deep waters. This is perhaps also the reason why they do not do well in the aquarium even if the aquariums are large. Blue sharks are not as violent as other sharks, however, they swim extremely well and very fast.
Facts About Blue Shark Appearance
Blue Sharks have specially designed bodies that give them agile and graceful movements. They can flap their tail fin extremely fast which makes them very powerful swimmers and they can swim for really long distances.
They have a pectoral fin that allows them to swim for long distances in water.
Their bodies are streamlined to swim in water with a very thin and long snout.
Blue sharks are slender as compared to other sharks. In length, these Sharks can grow up to 12 to 13 feet and weigh about 450 pounds.
As their name suggests the blue shark has a color ranging from light blue to dark blue. They can, in fact, be difficult to spot in the Blue Ocean from a distance.
They have a gradient texture with darker and bright blue colors, with lighter colors on their undersides.
Information on Blue Shark Behavior and Physical Adaptations
The Blue Shark is capable of surviving at the surface, in the middle, as well as at the bottom of the sea. They can also travel thousands of Miles for food as well for mating. This is the reason why the sharks have good survival.
Blue Sharks are social and live in groups known as schools. Usually, they do not attack humans but they can also be territorial which is why they can pose a risk to the divers.
They are usually slow and lazy swimmers unless provoked at which they can swim really fast.
Blue Shark Diet and Feeding Information
Blue Sharks are carnivores.
The Blue Shark can consume schools of small fish and even big fish. Other items in their diet include crabs, shrimps, lobsters, carrions, squids, octopuses and even smaller sharks.
Blue Shark Reproduction and Life-Cycle Information
Blue Sharks are polygamous and viviparous, i.e., they have more than 1 mating partners and grow a baby shark in their womb.
A female blue shark can deliver between 4 – 130 pups. The blue shark babies are not tended by their mother and are left to feed on their own.
The survival rate of the shark pups is very low and only a fraction of the pups reach maturity.
They reach sexual maturity at the age 5-6 years.
Blue Sharks can live up to 20 years.
Blue Sharks grow very fast and can grow upto 30 cm each year.
Blue Shark Threats and Conservation Status
Humans don’t fish for blue sharks, hence, they are considerably safer than some other fish.
Their conservation status is “Near-threatened”.
Blue sharks usually do not have to fear any predators once they are mature adults. However, they can fall prey to diseases because of their unhygienic diet. They do not refrain from eating garbage or dirt.
Adult Blue Sharks can fall prey to bigger shark species like the Great White Shark or Tiger Shark.
Blue Shark Teeth
Blue Shark teeth are pointed, serrated, and have a curved hook shape to catch the slippery prey in the water. The shape of its teeth is triangular as shown in the image below.
More Interesting and Fun Facts About Blue Sharks
- The gestation period of a Blue Shark is 12 months.
- The female blue shark has 3 times thicker skin than the males.
- These are the only shark species that can be found in oceans almost all around the world.
- Blue Sharks’ favorite food is the squid.
- They have deformities too just like humans. Once, a blue shark with two heads was reported to be born, just like Siamese twins in humans. However, it could not swim or eat properly and eventually died.
- Blue Sharks can fall prey to Sea Lions.
- Blue Sharks love wide open waters and cannot survive even in big tank aquariums.
- They have an amazing sense of smell. They can smell blood very easily.
- They have a special ability to detect their prey through electroreceptors (Ampullae of Lorenzini) located below their snout. It can detect contraction of muscles by their prey.
- Blue Sharks are also known as “Wolves of the Sea”. It is because of the fact that they live in groups.