Sharks (Акула)

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Sharks are aquatic animals belonging to the fish class. All sharks are predators, that is, they use animal food for food — from the smallest planktonic animals to large inhabitants of marine waters.

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You can meet dangerous predators in the Atlantic, Pacific, Indian Ocean, as well as in the Mediterranean, Red and Caribbean Seas.

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The most unusual marine animals are: 1. Tiger Shark . Tiger or leopard shark – refers to the most greedy predators, the maximum length of the fish leaves 5.5 m. A distinctive feature of the marine inhabitant is a tiger pattern located throughout the body.

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2. Hammerhead Shark . The hammerhead shark is a unique shark that has a "hammer" in front. The predator creates the appearance of a massive and unusual fish. Adults grow up to 6.1 m . Fish like to feast on seahorses, stingrays and stingrays.

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3. Silk Shark . Silk or Florida shark– has an unusual grayish-blue color with a metallic tinge. The maximum length of the predator 's body is 3.5 m .

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4. Raincoat Shark The raincoat or corrugated shark is a unique marine inhabitant capable of bending the body like a snake. The predator has an elongated gray-brown body, reaching 2 m and numerous leather bags.

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Origin of sharks. Most scientists agree that sharks descended from an ancient group of aquatic animals called gibods ( gibodonts ). These toothy predators, reaching a length of 2.5 m, lived in the seas and even fresh waters 320-360 million years ago. The choice of scientists in favor of gibods was not accidental - they looked like modern sharks. The main difference between gibods and sharks is the presence of a bony skeleton, thanks to which scientists were able to study gibods more thoroughly than primitive sharks, whose cartilage was destroyed by time. Cladoselachia - the first shark .

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The end! Thanks for your attention