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Ferocious predator of the oceans – Brazilian glowing shark

Among all members of the Dalat family, the Brazilian luminous (cigar) shark is one of the most interesting inhabitants of the deep sea. A distinctive feature of the form is the small size and greenish glow of the body.

However, in addition to external data, there are other specific features in the behavior and lifestyle of this predator.

The body of the cigar shark glows in the dark

The Brazilian shark loves temperate and tropical waters, so the distribution area is vast. It occupies the south and east of the Pacific Ocean, the west Atlantic, Indo-Pacific. It is found near Japan, Australia, New Zealand, Brazil, South Africa.

It was discovered near the Lord Howe Islands, Cook, Galapagos, Easter Island and Ascension.

These representatives of the class of cartilage fish prefer to live near the bottom, dropping to 3,500 meters. Closer to the surface (up to 100 meters) the shark is chosen only at night and at dawn again rushes deeper.

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Predator can not be confused with other members of this genus. In appearance, the Brazilian glowing shark is a fusiform (cigar-shaped) shape, the body is elongated.

The color range of the body varies from light shades of gray to dark gray with a touch of brown.

External characteristic of a predator:

  • small build on average 40 cm, although there are individuals up to 56 cm;
  • caudal fin large, occupies most of tail;
  • the fins on the chest are square, on the abdomen of a larger size than on the back;
  • jaws are powerful, lips are thick, have the function of a sucker;
  • triangular teeth pointed, upper significantly smaller lower;
  • the body is covered with fluorescent cells, giving a greenish glow, which persists for several hours after the shark is caught from the water;
  • eyes far set, which narrows the horizon of the animal.

Brazilian shark has powerful jaws and teeth

Scientists still do not have enough information about the predator mating and reproduction.

Brazilian shark refers to viviparous. After fertilization, eggs are formed in the abdomen of the expectant mother, which remain there until full maturity.

Developing, the embryos feed on the yolk, are born only in 12-22 months. In the litter is usually 7-10 kids.

After leaving the maternal organism, the sharks immediately become independent. They do not need to be fed or trained to hunt.

Unfortunately, it was not possible to catch a just-born baby, so the parameters of the cubs have not yet been established.

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The day at the glowing shark proceeds in a constant migration. She swims about three hundred meters from the bottom to the surface and the same back.

A large liver filled with fat reserves and a hardened cartilage covering helps the fish to feel good in deep water.

The Brazilian shark is a solitary animal, grouped in flocks just for mating.

Also, predators gather near the islands. It is there, from time to time, adult individuals of this species and bitten fish with characteristic round wounds periodically fall into the nets of fishermen.

Scientists suggest that the accumulation of sharks near the islands is due to the presence of a large number of prey there.

Cigar shark lives in the depths of the ocean

Another amazing feature in the behavior of fish is the chewing of their own teeth. Only old teeth are exposed to this procedure, in place of which new ones are already beginning to grow.

Perhaps in this way the animal makes up for the lack of calcium in the body.

The predator hunts for large individuals, several times larger than its own. It prefers dolphins, whales, sea sperm whales and even sharks of another species.

Crustaceans and squids are suitable for snacking.

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Lures with its own glow, the outlines of which resemble a small fish. As soon as the victim, noticing the bait, approached, the shark instantly grabs her by the side. Having caught the prey, does not swallow it, but sticks and gnaws a part of the flesh.

Firmly clutching his jaws, the predator begins to make circular movements. Tearing off a piece, the shark is removed, leaving the victim with a wound on the body.

If the predator is not saturated, it sticks to the other side and repeats the procedure.

Such an attack is not always fatal; in most cases, fish survive even without a bitten portion. In a mass attack, the victim bleeds and dies.

Shark bites off pieces from the body of its prey

In industrial production, the predator is useless, like most other deep-sea inhabitants. The inaccessibility of individuals does not allow a person to engage in commercial activities.

However, the shark can harm fisheries, crippling its representatives.

This species does not pose a threat to swimmers and scuba divers who decide to swim in the daytime.

At the moment, the predator has the status: the species that causes the least concern. It is not excluded that in the future, with the development of deep-sea fishing, the number of individuals may decrease.

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A favorite hobby of Brazilian glowing sharks is the hunt for submarines. Attack with enthusiasm, trying to do as much damage as possible.

A vivid event occurred in the seventies during a combat campaign. The massive attack of sharks fell on the American fleet, because of which the submarines became unusable, and the journey had to be stopped.

Brazilian sharks love to gnaw the cables located on the outside of the submarine. To prevent this from happening, the wires are either hidden inside or covered with protective materials.

Cigar sharks can damage ships

The deep-sea world is shrouded in riddles and each of its inhabitants is unique in its own way. Glowing green predator on a dark background looks fascinating.

Unfortunately, the characteristics of the Brazilian shark and its role in the ecosystem is partly based on assumptions. Scientists are still exploring this type, connecting modern technology, and perhaps soon there will be new facts about this unique creature.

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