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Shark fish

Sharks are found in open and coastal ocean waters. These mysterious creatures appeared on Earth 400 million barrels. years ago. Belong to cartilaginous fish. as their skeleton consists of cartilage. Cartilage is durable, and unlike the bones of fish, more flexible and light. They have no swim bladder. Afloat fish holds, thanks to its large but lightweight the liver. Her need to constantly move in order not to drown.

She swims, arching his whole body from side to side. Almost all of them when hunting using the electric field. Sharks capture him with the help of numerous electrical sensors that are on her face.

Many of them, it is not strange, they eat plankton. Plankton is a conglomeration of various microscopic and small organisms. Mainly unicellular plankton contains algae, which absorb solar energy, thereby transforming inorganic substances into organic food.

Among the live algae protozoa unicellular animals and planktonic animals (fish, crustaceans). The most abundant and dense layer of plankton found in the surface waters of the ocean. Imagine how much you have to eat a huge fish like this food so he can eat? All sharks are predatory fish. They catch mammals. fish, birds. Often attack people in the coastal zone, where come for the plankton. Scientists explain the behavior of sharks, as encroachment of man into their territory.

I ameloblastoma body shape, dorsal fin large, strong tail. Big mouth, tucked away inside a huge number of dangerous sharp teeth, which are arranged in several rows. Gill slits are narrow, they are very visible because they are not covered by the Gill covers.

The barbed body is covered with placoid scales. They look like shark teeth – sharp, just very small. Patting the fish against their growth, can up blood to get hurt. Eyes are small, she sees well. Hearing she was in trouble. Well-developed sense of smell, so to speak, “the sixth sense” is the lateral line of the body.

Sharks reproduce in different ways. Someone lays eggs, hiding them in the rocks or in the algae, and there are viviparous species. About the offspring they don’t care, little fish themselves provided. But already at birth they are predators. Today scientists count about 375 species of sharks.

Species of sharks: tiger shark; White shark ; hammerhead Shark ; Whale shark ; Mackerel shark; Shark-Fox; Australian spotted shark; Carpet shark and many others.

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