Undersea world
The article describes the unique and unexplored world of fish.
Fish - the inhabitants of the seas, oceans, rivers. What do they stand out among other animals?
Fish have a spine, and their breath is produced with the help of gills. Dimensions of fish can have a huge difference: the tiniest fish reach only a couple of centimeters, and the length of the giant whale shark is about 1370 meters. As for the coloring, nature has not regretted the colors. What strange patterns you will not find, considering exotic fish! Some of them use their color as a disguise, which allows them to hide from those whose victims they can become.
Fish are divided into several species, one of them - bone. This category belongs to the vast majority of fish, their bodies are held on the bone skeleton. They belong to both exotic clownfish, fish-dog, frogfish, and more close to us carp, sturgeon, flounder, herring and others.
There is also a kind of fish, like the swordless. Their peculiarity lies in the fact that the constituent of their skeleton is the cartilage, and instead of the jaw in their mouth there is a suction organ, and also a tongue. To this species of fish belong lamprey, myxina.
Separately it is necessary to allocate such a large type of fish, as cartilaginous. As already mentioned, the basis of their skeleton is the cartilage. Pretty large fish belong to this variety. For example, sharks, rays, chimeras. Such fish are covered with scales, and also they have rather powerful jaws (except for the incompetent ones).
The most frightening representatives of cartilaginous fish can be called sharks. White, tiger, tupory and several other species of these fish are dangerous for humans, it may well become their prey. Hunting for the victim these animals can carry out as flocks, and by themselves. But not all sharks pose a threat to humans. For example, to quite harmless sharks can be considered a whale, bull, leopard.
Like all cartilaginous fish, skates have to swim constantly, because they are heavier than water and can simply drown. The shape of these fish is quite interesting: they look like elongated and flattened sharks. In this case, they are distinguished by large flat fins located on the sides. Dimensions of skates can also fluctuate significantly, the largest of them - the manta ray, called the sea devil, reaches a length of six and a half meters, while it remains safe for humans. The smallest in size and weight - skate short-eared electric, weighs about half a kilogram, and in length does not reach even a half dozen centimeters.
Among the cartilaginous fish should pay attention to the chimera. They stand out among all eyes of large size, bare narrow tails and spreading fins. Their unique feature lies in the fact that they can fly over the bottom of the sea.
The world of fish is amazing and unique. It contains many unsolved mysteries and unique moments that sometimes do not lend itself to human
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