Shark gray-blue: photo and description

The gray-blue shark is still known as the mako, as well as the mackerel, Bonito. Some people call it black-eared. In addition, this species also has subspecies, such as the white big, Pacific and Atlantic shark.

Longfin shark

In the middle of the last century, another species was described. This shark is long-finned, which is a relative of the usual gray-blue.

There is only one difference between these types - the structure of the pectoral fins.

The fins are very long in this species. They are much larger than the width, which is very similar to the wings. The shark is gray-blue dlinplavnikovaya in one area with its relatives. It is believed that this is the descendant of the ancient sharks, which bore the name Isurus Hastilus.

This species supposedly had a length of up to six meters, and weight - three thousand pounds. It is believed that this type lived in the Cretaceous period.

Mako. The behavior of representatives of the form

Gray-blue shark-mako, the photo of which is presented below, is an aggressive sight. Such a shark is quite dangerous not only for the inhabitants of the sea, but also for humans in particular. After all, she will attack indiscriminately at anything she can think of as prey. Such a shark has a bad reputation among scuba divers and divers. After all, this species does not pick out the prey during the hunt and often attacks the divers. There are cases when a shark gray-blue during the hunt for fish jumped into the boat of fishermen and even caused harm to people.

This species of sharks is most often found in the Pacific, Atlantic and Indian. Preference is given to the waters of the tropical zone, where it is warm and not stormy. If the water temperature reaches sixteen degrees, then this shark can be met with difficulty. But most often they tend to sail to where the water is warmer. If there is a mako in cold water, then only where the swordfish lives. After all, it is for the shark favorite food.

Why is it called "mad"?

This predator tries to keep on insignificant depth, and if leaves in depth, only on 150 meters. Another nickname is the Mako Shark - "mad". This is due to the fact that it is very curious and fast. Thanks to the elongated and streamlined body and long muzzle, it during the hunt develops speeds up to 60 kilometers per hour.

Few of the animals living on land, can develop this speed. But remember, there is resistance in the water, which is not on earth. During such a chase shark-mako can jump out of the ocean to a height of up to six meters. To develop this speed, not only the streamlined shape of the body, but also the well-developed circulatory system, helps this species. The fact that the musculature is covered with a large number of capillaries that promote the heating of the muscles and provoke their frequent contraction, in the end, makes it possible to develop such a good speed. This ability is not available for all types of sharks.

But, like everyone else, to quickly move, it is necessary to replenish its energy reserve with food. Of course, food needs a shark gray-blue. This view is very voracious and therefore attacks everything that may be edible. And in the end, because of their curiosity and illegibility, these sharks attack people. Such attacks on humans have already been recorded many times, especially on those who swam away from the coast.

The shark is gray-blue. Description

From other sharks this species differs in that it has the shape of a caudal fin in the form of a month, as well as short finlets on the chest. Dorsal in this case is quite different. The first of them is large, and the second, near the tail, is much smaller.

The length of this individual can reach an average of 3.5 meters. But there are also specimens that have up to four meters in length, and their weight exceeds 400 kilograms. Like every predator, there are teeth located in several rows. They are sharp as a blade of a knife and are bent a little inward in order to keep their grasp on their prey. The teeth of this specimen can be seen even when the jaw is closed. Unlike the white shark, this keeps its prey, but does not tear it apart. The number of teeth on the lower and upper jaw is the same.
The head is proportional to the trunk of the fish, it has large eyes. The shark's nostrils have special receptors in the form of grooves. They help this creature to quickly detect smells in the water and to locate its prey or wounded sea dweller. Many predators find food in the vast expanses of the ocean difficult. But the gray-blue shark-mako copes with this task quickly.

The color of this predator looks like a blue one. But only has a difference in its massiveness. Above, this predator has a blue and blue color, while closer to the stomach, the color changes to light - more gray or white. Like all cartilaginous ripples, the Mako Shark also lacks a swimming bladder, therefore, only moving, it is retained on the water.

Food

This predator feeds variedly, but if there is a choice, it prefers large fish, which get lost in jambs. It can be mackerel, herring, mackerel, tuna and others. Do not deny yourself and treat yourself to octopuses. Can catch and squid. And if the dead whale catches, then the shark is also gray-blue, the photo of which you see in the article, will not deny yourself the pleasure. It happens that it will attack even birds that swim on the surface of the water, and does not disdain small inhabitants of sea waters. Therefore, it is clear why it is believed that the shark is not picky in food. But most of all this predator likes to eat swordfish, as was mentioned above. And people who are engaged in fishing business know that if a sword swims nearby, you can see a gray-blue shark nearby.

But when these two predators are faced, one can see their struggle, in which the strongest wins. In a fight, both a swordfish and a shark may die. But because of their preference for eating everything alive, we can say that all sharks have the best ability to survive.

Reproduction

This species multiplies by means of egg-planting. Eggs that have been fertilized develop completely in the womb of the mother. Then it produces light perfectly formed small sharks. This species is peculiar to eat their own kind, or rather, even in the womb of the mother, the strongest cubs can devour the weak or the eggs that are lagging behind in their development. As a result, a small number of newborn maca sharks appear. Basically there are about a dozen of them. Already in the first minutes of his new life, small sharks should take care of themselves independently: to get food, and also to worry about their safety. After all, these babies are easy prey for marine predators. It happens that the parents themselves can attack the cubs.

Enemies

But, like everyone has enemies, so this predator has creatures that he fears. Among such large swordfish (although they are the favorite food of the gray-blue shark). There are also other enemies, such as larger sharks of other species, crocodiles or killer whales, who are also endowed with the ability to develop high speed and have the skills of collective attack.

"Friends"

But there are also inhabitants of the sea who are "friends" with this ferocious predator. These include: pilots, fish-sticking, a fish-cleaner (she accompanies the shark and helps to get rid of skin parasites). Even on the body of a shark, it is possible to find such inhabitants as the kapepods. They cling to the fins of a predator. Crayfish-capepods also clean the surface of the skin of the fish.

Fishing

Fishing for sharks has long been not conducted. But if you find a gray-blue herring shark in the network, then it is not released. After all, its meat is very tasty and valuable, especially with fins and liver.

Dangerous predator

This species is of great interest for fishermen-athletes. Since when catching these individuals, the shark fights for its life to the last extent. This gives athletes a lot of emotions and the opportunity to compete with a ferocious predator.

But with such creatures one must always be cautious. After all, they are dangerous even when they are on land. During transportation, the fish behaves calmly, but when someone approaches it close enough, then with a quick movement, it can avenge itself. For example, to deprive a person of one of the extremities or even kill.

There are cases when this species of sharks swam close to the shore and attacked the bathing people. Now one briefly tell. There is a case when the Mako shark came very close to the shore and swam at a depth of only a meter. At the same time one of the rescuers tried to shoot a special gun with a harpoon. But the shark was freed and jumped ashore to avenge its offender.