Red sea
Red sea – an inland sea of the Indian ocean. located between the Arabian Peninsula and Africa. One of the most warm seas. Considered the most salty sea on earth.…

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Sea catfish
Signs. Body elongated, laterally compressed, glabrous. The coloration of back, sides of body and all fins, except the ventral, zelenovato-grey, almost black. Dorsal fin very short, is located ahead of…

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Fish or fishes?
Fish enliven the garden pond and justify their presence in it that eat mosquito larvae and other insects. However, the presence of fish in the pond is desirable, but not…

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man

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Sharks

Sharks are one of the most formidable inhabitants of the ocean. The lack of bone tissue and Gill covers, especially the structure of scales, and many other features of the structure speak of their ancient origin, as confirmed by paleontological data the age of the first fossil remains of sharks is determined approximately 350 million years. Despite the primitiveness of the organization, shark — one of the most perfect predatory fish of the ocean.

Over a long period of existence they managed to adapt perfectly to life in the water column and now successfully compete with bony fish and marine mammals. Unlike bony fish sharks and rays don’t spawn and lay their large, covered with a Horny shell eggs or give birth to live young.

The highest values reach whale (up to 20 meters) and the so-called giant shark (up to 15 meters). Both these and others, like baleen whales, they feed on planktonic organisms. Wide and gaping jaws, these sharks move slowly in the midst of clusters of plankton and filter the water through Gill openings covered by a network of special outgrowths of surrounding tissue. Giant shark profiltruyte an hour to one and a half thousand cubic meters of water and remove all organisms larger than 1-2 millimeters. Continue reading

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WHY sharks rarely get sick?
Powerful, swift, and deadly rulers of the seas – sharks – can cause conflicting emotions, people. Primal fear, and sometimes disgust in an incredible way combined with admiration and a…

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The pond at the dacha with his hands, gardening, Babysitting.
The pond near her house or in her own yard, the cherished dream of any city dweller. Relax in the gazebo by the pond on a hot summer day -…

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