Shark – dangerous sea creatures
Shark is a marine predator, which has animal instincts, and we can’t predict a shark will attack or not.
Bearded shark in camouflage, Indonesia, Indian ocean. However, it is easily recognized by the beard, which frames the head. These outgrowths attach to the shark very funny. Its flattened body is grayish or yellowish brown with large light spots. This allows the shark is easily distinguished from the surrounding sandy seabed and corals. She swims at a small depth , among coral reefs.
The shark has an average size – about 1-1. 5 meters. Although some specimens can reach 3-4 meters, but this happens very rarely. Besides fish, bearded sharks eat invertebrates that live on the bottom.
The degree of hazard to humans: medium.
For man bearded shark is not dangerous, it is important not to anger. But if to dismiss his hands, carrying her by the tail and poking, painful bite is guaranteed.
Bull shark or bull shark
Bull shark, the Pacific ocean.
The body length of marine subspecies of bull shark can reach 3.5 m freshwater subspecies is slightly smaller. Colour usually grey, only white belly.
The degree of danger to humans: very strong.
Bull shark or bull shark is the most dangerous kind of sharks. This predator responsible for the deaths of hundreds of passengers on ships shipwrecks.
How to protect yourself from an encounter with this shark?
Swim in a group (usually predators attack the loners)
Do not enter the water at dawn and dusk (sharks this meal period)
Avoid places where sharks are known to be present
To stay closer to the shore
Can live both in sea and in fresh water.
The oceanic whitetip shark
The oceanic whitetip shark is harvested. The man is interesting primarily for its large fins, which are a part of various dishes. Reaches 3.5-4 meters in length, but often there are individuals with a length of 1.5-2 meters and a weight of 20-60 kg. of the Environment, its habitats are tropical and subtropical waters of the World ocean. Found the oceanic whitetip shark in the open ocean.
Its diet includes fish (particularly tuna), squid, and sometimes clams. As a result of such taste preferences, the oceanic whitetip shark is very detrimental to the tuna fisheries.
The oceanic white tip shark teeth
The degree of hazard to humans: strong
There have been cases of attacks by oceanic white tip sharks on humans were fatal. however, these cases are extremely rare because sharks rarely come to shore. As a rule, these cases occurred as a result of different aircraft and shipwrecks of people caught in the open ocean.
The whale shark is the largest shark and also the largest representatives of the fish. Can reach a length of 13,7 – 20 m Weight whale sharks can reach 12 t
The whale shark feeds exclusively on plankton and other small organisms which it filters, involving in itself water. Teeth rudimentary — 3 mm in length. Throat diameter 10 cm.
The degree of hazard to humans: medium
In relation to man the whale shark is behaving peacefully, not only does not attack, but even collapses, if a swimmer is on her way.
Nevertheless in its path better not get caught: Jacques-Yves Cousteau in the book “a Brilliant barbarian of the seas” describes the following incident: Our American friend Conrad Lambo got one serious injury, accidentally hitting his hand in the mouth of whale shark. Although fish have not closed the jaws, Conrad left a reminder in the form of numerous abrasions and bruises.
Characteristic distinctive feature of these sharks is an unusual form of the head, resembling a hammer, so another common name is the hammerhead shark. Found in warm tropical waters of coastlines and continental shelves, and can swim in open water. These are large sharks, adults reach 6 meters in length.
Giant hammerhead shark
School of fish-Molotov, Pacific ocean, West coast of Costa Rica.
Hammerhead sharks are aggressive predators, feeding on various species of fish, crustaceans and cephalopods. Frequently in stomachs of large hammerhead sharks detect rays.
The degree of hazard to humans: strong
There have been cases of attacks by hammerhead sharks on humans. Earlier it was considered one of the most dangerous species of shark because of their ominous appearance.
White shark and a great white shark was nicknamed “man-eater”.
The white shark is a large shark found in coastal surface waters of all the oceans of the Earth. Reaching lengths of 6 metres and a weight of 2250 kg, the great white shark is the largest predatory fish modern. The only survivor is the view from your genus Carcharodon.
Young sharks feed on small fish, tuna. Grown sharks go to feed seals, bypass the whale carcass.
The degree of danger to humans: very strong
High body temperature makes them faster and smarter than most sharks, which are essential when hunting for seals. Fatty foods are needed to maintain high temperatures. Sometimes the shark takes people for seals and attack, but he felt in his teeth instead of seal fat, bone, lets go.