Sharks are among the most dangerous inhabitants of the seas and oceans every year, they make hundreds of attacks on people, and in about ten cases, they kill their victims. At the moment scientists know of more than 360 species of underwater predators, which include both small and defenseless, and a huge man-eating sharks. They have removed a large number of films ranging from the classic “Jaws” 1975, and ending with the relatively recent “Meg: Monster of the deep” in 2018. But are they the same scary as shown in the movies?
Despite the great diversity, truly dangerous to humans are only 10 types of sharks. Scientists recently found that they are all descended from the same ancestor, which lived about 165 million years ago. The ancestor of the modern killers was not as bad as initially expected — the length of ancient sharks Palaeocarcharias stromeri does not exceed one meter, and she ate only small fish. Her descendants are much worse and more dangerous.
This species mainly inhabits the Indian and Pacific oceans. They prefer clear water and are often found near coral reefs and underwater cliffs. Besides the fact that they can scare chilling glance, they have very large dimensions — length reef shark reaches two meters.
Despite all this, they attack people extremely rarely — in 2011 it was aware of only 11 cases of attacks by sharks on people, and none of them was fatal. Sharks show aggression only when provoked, and in peaceful circumstances, they can easily swim up to divers and allow you to feed yourself from his hands.
This species generally inhabits shallow bays — parts of the seas, separated from the open waters of the rocks, which protect them from the wind and waves. Length of adults is about 3 meters, and weight reaches 180 pounds. Usually, these sharks hunt only at night and mainly eat fish and molluscs.
Because of their large size, they are considered potentially dangerous to human life. However, history has not yet recorded fatal attacks. The case when a lemon shark attacked a diver with a GoPro camera — luckily, the man was not injured, which is not true of recording equipment.
Blue sharks are the most common in the world — you can meet them in the open ocean and on the coasts of different countries. Their body length reaches four meters and a weight of 400 pounds. This species of sharks, almost no enemies, except for humans, who catch them for fun and for cooking.
Of course, because of the hostility people often become their victims. So, in 2011, we recorded 34 attacks by blue sharks, which killed 8 people. In 2017, the victim was more on the coast of the Mediterranean sea, these predators ate more than 30 people.
The sand shark
This species is also widely distributed, and occurs in almost all warm seas. They prefer to live near the coast, and most of the time are on the bottom, feeding on small fish, stingrays and other aquatic animals. It is noteworthy that the sand sharks are one of a kind predators that can swallow the air for easier navigation on the water surface.
Statistics says that from 1990 to 2011 sand sharks attacked people as many as 30 times — one person could not be saved, and he died. Despite this, the owners of aquariums still believe sand sharks are relatively safe creatures and placed inside a huge aquarium, allowing visitors to swim with them.
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Giant hammerhead shark
These sharks inhabiting warm and temperate waters, really huge — the length of the body of certain animals up to six meters. As the name implies, these carnivores have a very unusual head shape that is similar to a hammer. Like the above species, these submarines are “hammers” they feed mainly on fish, but there are known cases, when they ate, even their relatives.
In 2011, biologists recorded 34 attacks by sharks on people, and one of them was fatal. In fact, a small number of deaths is very surprising — when attacked, they behave very sharp and aggressive, and his strong teeth, can literally rip people apart.
The oceanic whitetip shark
These predators live in all oceans, but choose the place with the most warm water. They usually eat fish, but their method of eating aquatic creatures is very unusual — they open wide and quickly swim to the side of the fish aggregations that they flew into their huge mouth.
A few decades ago oceanic whitetip sharks were called sea dogs because they are often chasing sailing ships. Legendary Explorer Jacques-Yves Cousteau called them the most dangerous sharks in the world. The most famous oceanic whitetip shark attack was committed during the Second world war, then the coast of South Africa sank the steamer Nova Scotia with 1,000 passengers, and most of them were killed in exactly this type of sharks.
A Mako shark
This species of sharkliving in temperate and tropical seas, not only for its intimidating 4-foot body as his agility. It is known that the speed of Mako shark reaches 74 miles per hour. At the same time, it can jump out of the water to a height of 6 meters — I can only imagine how badly it can kill a man, quietly sitting in a boat. In history there are as many as 20 such cases, but, fortunately, the damage was applied only swimming means.
As a rule, this species hunts close to shore, and sometimes eats fish caught in a fishing net. From 1980 to 2010, we recorded 42 attacks on humans, three of which proved fatal. Usually the attacks are made from the bottom up, the predator instantly bites off a piece of flesh of the victim. From the received wounds the man could die.
This species is also extremely common, and see him almost everywhere. Length tiger sharks, sometimes more than 5 meters, and they are practically omnivorous — apart from the remains of fish, birds and turtles, their stomachs are sometimes found to have non-edible items. To eat it all they can due to the huge jaws with developed muscles.
In history there are many cases where inside tiger sharks were found in the human body. For example, in 1937 one of these predators attacked the two boys were subsequently killed and dissected the bodies of children were found in his stomach. By 2011, scientists have recorded 169 attacks of tiger sharks on humans, and 29 of them were fatal. On average, Hawaii happens 3-4 attacks a year.
This species is considered to be one of the most dangerous and tenacious, but is on the verge of extinction — at the moment, biologists are aware of the existence of only 3,500. They are found in open waters and coastal areas of almost all oceans of the world, and weighing more than 1,900 kilograms reach 6-foot lengths.
In the classic horror movie “Jaws” this shark was depicted as a bloodthirsty cannibal. This is no accident, because from 1990 to 2011, biologists have recorded approximately 139 cases of white shark attacks on humans, 29 of them were fatal. With all this, most people manage to escape after the first attack, but after the strongest bites they still run the risk of becoming disabled.
If a white shark became the main antagonist of the movie “Jaws”, the roundnose are the masterminds behind the film. The size of their bodies can reach four meters, and it does not prevent them to swim in the river, where they can easily eat people.
The most famous case of roundnose shark attacks on humans occurred in 1916, on the coast of the U.S. state of new Jersey. During a series of shark attacks four people were killed and one was wounded. It is believed that the attacks were carried out due to the fact that in the period from 1 to 12 July in the water swam too many people, and predatory fish smelled their scent.
After reading the statistics of attacks, it may seem that sharks are not that dangerous predators. In principle, you’re right — scientists believe that the risk of becoming a victim of a shark is extremely low. For example, in the US from lightning strikes killed far more people than from shark attacks. Besides, for most of them people are not particularly desired food, and that they were attacked, they need a good angry.
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