As with many things that scare us, we humans have always had a fascination with sharks. We obsess over them. We attend shark attack movies and we have a ‘shark week.’ And we always want to know all about the biggest shark, or what is the fastest shark.
Learning more about sharks
Over many generations, sharks have been respected, feared, and even admired by humankind. Believe it or not, very little was actually known about these remarkable predators of the seas. It wasn’t until the last few decades that researchers have begun studying them and coming to understand them more.
Such efforts have revealed many incredible facts and dispelled many myths about them. Believe it or not, many of these shark facts have made them even more fascinating – as in any ways, they have proven to be almost near perfection among Earth’s living beings.
Shark attack facts
Sharks attack about 100 people annually and about 10% of these attacks are fatal. Conversely, humans kill tens of millions of sharks each year for their meat, fins, skin, and liver oil. In reality, humans are actually bigger killers than are sharks.
Sharks reside at the very top of the ocean’s food chain. After a large meal, a shark can wait as long as three months before it needs to eat again.
Swimmers have one chance out of 300 million dying from a shark attacks. In fact, more people are killed by lightning or bee stings every year than by a shark. Interestingly, sharks tend to attack far more men than women.
Shark pups start killing before they are even born. This is because they eat their weaker siblings while inside the oviduct of their mothers.
General information shark facts
Presently, around 350 shark-known species exist in the world today. Of that number, around 75 of these species are considered to be endangered.
A shark is able to hear a fish swim more than a mile away, and it is also able to smell just one drop of blood among a million drops of seawater. It can pick up an electronic signal from a typical AA battery from over a mile away.
Roughly 66% of its brain is devoted to its predatory sense of smell.
Unlike humans and other living creatures, sharks are move both their upper and lower jaws to consume their prey. Not only that, the average shark goes through around 30,000 teeth in one lifetime.
Oddly enough, the only thing that keeps a shark from sinking is the density of the oil in its liver. The density of its liver oil is less than that of seawater.
Shark species facts
The Dwarf shark is the world’s smallest shark as it is about the length of a man’s hand. Whale sharks are the largest known shark as they are about the size of a school bus.
Bull sharks are very unique because they are capable of living in seawater or freshwater.
Oceanic White-tipped sharks are considered to be the most dangerous shark to humans because they have no fear whatsoever of swimmers or divers – and aren’t shy about attacking them.
A Portuguese shark is capable of diving over one and a half miles beneath the surface of the ocean.
Tiger sharks are often found swimming through shallow water.