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Tiger shark

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Tiger shark
Tiger shark 1.jpg Juviniel Tiger Shark
Scientific Classification
Binomial Name

Galeocerdo cuvier [1]

Tiger shark 2.jpg
Adult Tiger Shark

Tiger sharks is a species of shark known by the scientific name Galeocerdo cuvier. They are perhaps best known as the second most dangerous shark known to man,[2], and for the distinct stripes on their bodies, that give them their name. Like most wild animals the females are the most aggressive, and are responsible for most of the species attacks. Sharks are made up of cartilage. Cartilage is heavy so the shark has to keep moving at all times or the shark will sink and suffocate. All sharks swim alone, tiger sharks included. Sharks are afraid of Dolphins because dolphins swim in pods and can gang up on the shark and stab it to death with their noses.

Body Design

TIger shark teeth

The Tiger Sharks is one of the largest shark species. Like all sharks, they are made up of mostly cartilage. If you look closely at Tiger Sharks, you can see the stripes that give them their name. the stripes that resemble a Tiger. Like every Tiger these stripes vary in size shape and color with each shark. Tiger sharks are very long, some can grow up to fourteen feet long and can weigh between 850 Lbs to 2,000 Lbs. Tiger sharks have strong jaws and rows of teeth with 24 teeth in each row. When the sharks teeth get old they fall out and new ones grow in. Tiger sharks can see much better at night than during the day. They have special lenses behind their retinas to reflect light and help them see. [3].

Life Cycle

Pregnancy with tiger sharks lasts between 15 and 16 months. Normally, the young are born with a length of 50 to 70 centimeters, but depending on where they are born, the young may also be much larger. For example, in the region around Hawaii their size at birth reaches 80 to 90 centimeters. The average number of pups per litter is 41, whereby the spectrum fluctuates between 10 all the way up to 80. Females appear to bear young only every three years. It is not known if males have a similar cycle, but generally they are presumed to have more of an annual cycle.[4]

Tiger sharks are viviparous (bare live young).[5] The majority of sharks are ovoviviparity, which is when the sharks lay eggs inside their bodies and retain then until they hatch.[6] Oddly, tiger sharks are the only species of gray shark who do not bear their young live with a placenta (placentally viviparous), but reproduce aplencentally viviparous.[7]

Ecology

Hilighted area shows the locations of the Tiger Sharks habitat.

Almost all tiger shark sightings have happened close to shore. Tiger sharks main habitat is in warm, murky salt water. These sharks have been spotted from the coasts of Hawaii to Europe. Tiger sharks do not need anything special in their environment. The only thing tiger sharks need is other marine life to feed on. Tiger sharks will eat anything if they’re hungry enough. Experts are unsure why tiger sharks attack humans, but some scientists say they mistake us for sea turtles, and others say it is because their territorial and we have invaded their natural habitat. [8]

The most recent tiger shark sighting was in November, off the coast of Shimoni, just south of Mombassa. Some snorkelers spotted the remains of an adult Humpback whale. As the snorkelers got closer, they realized the whale was missing its head. They were told not to go into the water because tiger sharks were approaching. Not long after they spotted two adult tiger sharks and a juvenile tiger shark. Tiger sharks are aggressive when they are hungry.[9]

Shark Attacks

There are 354 known species of shark in the world [10]. Out of those 354 species, only 39 are known to harm humans. Of the 39 species, only three are known for unprovoked shark attacks. The Great White shark is commonly known for attacking humans for no apparent reason. The Tiger shark is the second most dangerous shark.[11] During 2011, off the beaches of Holualoa Bay, two women were attacked just three days apart. Both of these women were surfing and thought they had hit a turtle, but when the shark tried to knock them off their boards they knew it was more than just a turtle. Thankfully, both women survived the attack unharmed. Experts think both women were attacked by the same tiger shark.[12]

It is a natural instinct for humans to be afraid of sharks. However, some sharks are "scarier" than others. For instance, great white sharks are the most famous kind of shark. They don't eat humans they only bite humans. Tiger sharks are known to eat entire humans. However, these attacks happen less frequently. That is why tiger sharks are the second most dangerous shark.

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References