Monthly Archives: July 2014

About whalesThe fact that whales are not fish, of course, known to every schoolboy. They breathe air. Female whales give birth under water to live young and feed them milk. They even have a little bit of hair. In short, Keith is a typical warm-blooded mammal. But, at the same time, this is the strangest of all mammals. 10th place: sperm Whales can dive to a depth of 1000 meters. The pressure at that depth is 100 times greater than the pressure on the surface.

9th place: When diving the pulse of the whale falls to ten beats per minute and blood ceases to flow into the vessels of the fins, skin, tail. It nourishes the brain and heart. Continue reading

A detachment of cetaceans (Cetacea)The order Cetacea includes 77 species of whales, dolphins and their relatives. All my life they spend in the water and out of it quickly perish.

The structure features of this species:

The body bare, streamlined.

Body movement is a powerful tail with two horizontal rowing a leaf on the end. The front limbs have evolved into flippers, the back is completely missing. Nostrils (blowhole) are on the top of the head.

Mating, birthing and feeding of offspring occur in the water. The litter usually one pup, although there are twins.

In unit two suborders: toothed and baleen whales. Continue reading

dolphinhouse

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